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A charge Q is to be devided on two objects what should be the values of the charges on the two objects so that the force between the objects can be maximum?

Posted by Hrv Brothers 4 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Write properties of Magnetic Field Line..?

Posted by Snehal ❤ 4 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Gurleen Kaur 4 years, 3 months ago

Magnetic field lines are never interspt each other

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Himanshi Rajput 4 years, 3 months ago

1)outside, they originate from north pole and terminate into south pole and direction revers inside. 2) they form closed loops 3) 2 magnetic field lines do not intersect each other

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Capacitor blocks DC but allow to pass AC .Why ?

Posted by Himanshi Rajput 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Benson E B 4 years, 3 months ago

The capacitor blocks DC because there is no electrical connection between the 2 electrodes; rather there is a vacuum or an insulator.

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Why do we find magnetic dipole moment? Actually what is dipole moment, i understand the formula where it derived from but I didn't understand the actual meaning of magnetic dipole moment..

Posted by Thupten Naksang 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Tulsi Singh 4 years, 3 months ago

Magnetic dipole moment =It can be defined as a vector linking the aligning torque on the object from an outside applied a magnetic field to the field vector itself. may it be helpful

1Thank You

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If v directly proportional to i is ohms law than should non ohmic conductor follow ohms law

Posted by Anurag Dwivedi 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Thupten Naksang 4 years, 3 months ago

Non ohmic conductor follows the ohm's law but for a very short time and at very low temperature...

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Curie's law

Posted by Haigriv Patel 4 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

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Can the practical content with vedio be made available please

Posted by Hemant Singh 4 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

The magnetic moment is 0.5 JT^-1 . Calculate the magnetic field at a distance of 10 cm on its axis also calculate magnetic field at a distance 5 cm on its equator .(Numerical of chapter 5 of 12th Science)

Posted by Vatsal Lad 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Vijay .S 4 years, 3 months ago

I don't no

3Thank You

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A magnetic material has 5000 turns per metre. Its magnetic susceptibility is 499 10 A current passes through it calculate H,B and M (Numerical of chapter 5 of 12 science)

Posted by Vatsal Lad 4 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Obtain the balance condition for wheat stone bridge

Posted by Arshdeep Singh 4 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Sher Singh 4 years, 3 months ago

Galvanometer shows no deflection.Ig=0 P/Q=R/S

1Thank You

Anand Shukla 4 years, 3 months ago

P/Q=R/S

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What are the characteristics of electromagnetic waves?

Posted by Atharva Verma 4 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Sher Singh 4 years, 3 months ago

Electromagnetic waves travel with speed of light. They does not require any medium. Electromagnetic waves are transverse in nature i.e. they are perpendicular to their path of propagation.

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Prabhat Tiwari 4 years, 3 months ago

It is transverse in nature and does required medium for travelling

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If two electron are each 1.5 × 10 to the power -10 m from a proton as shown in fig magnitude of the net electric force they will exert on the proton is??

Posted by Suryansh Yadav 4 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Atharva Verma 4 years, 3 months ago

Figure?

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Bhumika Agrawal 4 years, 4 months ago

What fig will be given

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Formula for torque

Posted by Manjeet Singh 4 years, 4 months ago

CBSE > Class 12 > Physics

5 answers

Amit Kumar 4 years, 3 months ago

Torque= pEsin thita

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Prabhat Tiwari 4 years, 3 months ago

T= either force (qE) × perpendicular distance (2l) therefore ,T= qE×2l We know that dipole moment (P)= perpendicular distance (2l) × charge (q) means P=2l×q So T= qE×2l =PE = P perpendicular E Hence T= PE sin theeta

2Thank You

Bhumika Agrawal 4 years, 4 months ago

Torque= pE sintheta

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Magan Garval 4 years, 4 months ago

Torque =pEsin○

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Mohiit Muthiah. S 4 years, 4 months ago

T=pEsintetha

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tournament kitne prakar ke hote Hain

Posted by ꧁V̸I̸K̸A̸S̸༆Vk꧂ ꧁?Y̸A̸D̸U̸V̸A̸N̸S̸H̸I̸?꧂ 4 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Bhumika Agrawal 4 years, 4 months ago

And this question is phe not physics

1Thank You

Bhumika Agrawal 4 years, 4 months ago

Two

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An electric dipole is placed at an angle of 30° with an electric field of intensity 2 × 105 NC–1 , It experiences a torque of 4 Nm. Calculate the charge on the dipole if the dipole length is 2 cm. (a) 8 mC (b) 4 mC (c) 8 μC (d) 2 mC

Posted by Bhumika Agrawal 4 years, 4 months ago

CBSE > Class 12 > Physics

4 answers

Prabhat Tiwari 4 years, 3 months ago

T= PE sin theeta and by putting the given value in this equation we calculate the value of P

1Thank You

Md Arbaz Khan 4 years, 4 months ago

2mC

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Bhumika Agrawal 4 years, 4 months ago

1Thank You

Shashank 11 4 years, 4 months ago

2mC

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What is si unit of flux

Posted by Preeti Sindur 4 years, 4 months ago

CBSE > Class 12 > Physics

5 answers

Prabhat Tiwari 4 years, 3 months ago

Electric flux = NM^2/C Magnetic flux = tesla (T) or weber (wb)/m^2

1Thank You

Mayank Gaud 4 years, 4 months ago

N-M^2C^-1

2Thank You

Bhumika Agrawal 4 years, 4 months ago

Volt meter

0Thank You

Mukesh Bhardwaj 4 years, 4 months ago

Volt meter

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Sher Singh 4 years, 4 months ago

Nm^2C^-1

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Why electric fields not form closed loop

Posted by Sahil Dhaliya 4 years, 4 months ago

CBSE > Class 12 > Physics

4 answers

Amit Kumar 4 years, 3 months ago

Because of conservative nature

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Bhumika Agrawal 4 years, 4 months ago

the electric field lines form a closed loop, these lines must originate and terminate on the same charge which is not possible because electric field lines always move from positive to negative. ... Therefore, we say electrostatic field lines never form closed loops.

1Thank You

Krishan Kumar 4 years, 4 months ago

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Sameer Kumar Tagore 4 years, 4 months ago

If it is then it will contradict with the statement, field lines is emerges from positive charge and incident on negative charge ,hence it will not form closed loop

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Potential

Posted by Abhi Sisodiya 4 years, 4 months ago

CBSE > Class 12 > Physics

3 answers

Prabhat Tiwari 4 years, 3 months ago

As in simple word we can say that potential is related to term " capacity " but in science potential is not defined only change in potential or potential diffrence is defined that is W(0 to infinity)/q. { amount of work done to bring a unit test positive charge from infinity } and it's SI unit is j/C

1Thank You

Bhumika Agrawal 4 years, 4 months ago

If we talk about potential then I concluded that "it is a qualities or abilities that someone can perform a task. If we talk about potential in physics language I concluded that it is the difference in the amount of energy that charge carriers have between two points in a circuit.

1Thank You

Sameer Kumar Tagore 4 years, 4 months ago

Potential difference is physically significant, so for defining potential we need a refrence point through with we can define potential at a point or simply potential ,a convenient way of choosing a zero potential is at infinity so we take a point at infinity say potential is zero this place and ultimately potentail at a point is defined.or simply it is a work done in taking a test positive charge very slowly or constant speed from infinity to a point.

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Can anyone give me formulas related to first chapter?

Posted by Priyanshu Bhatt 4 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Sher Singh 4 years, 4 months ago

F=KqQ/r^2. Q=ne. E=F/Q E=Kq/r^2 E=dV/dl

1Thank You

Sparshi Singh 4 years, 4 months ago

V= IR V= EL I = neavd E= Jrou

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Calculate the work done in rotating a magnet of magnetic moment 3.0 J T^-1 through an angel of 60° from its position along a magnetic field of strength 0.34×10^-4 T.

Posted by Anurag Singh 4 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Aditya Dhakarge 4 years, 4 months ago

Hhh

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Notes of chapter 13

Posted by Sonali Singh 4 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Himanshi Rajput 4 years, 3 months ago

I also want notes of chapter 13 can anyone provides me plz

0Thank You

Pankaj Bhichar 4 years, 4 months ago

Yes I have

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What is the relation between electric field and magnetic field?

Posted by Atharva Verma 4 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Prabhat Tiwari 4 years, 3 months ago

H√u/e

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why spark appears on sharp ends but not on the plane surfaces

Posted by Tec Om 4 years, 4 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

If any one has a pradeep fundamental book , please tell me what topics are included in it ch 6,7 for session 2021-2022

Posted by Gurwinder Singh 4 years, 4 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Please tell me anyone what topics are in ch 6,7 physics class 12 is only wattless current and power factor is cut?

Posted by Gurwinder Singh 4 years, 4 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Assertion:An applied electric field will polarize the polar dielectric material. Reason: In polar dielectric materials, each molecule has a permanent dipole moment but these are randomly oriented in the absence of externally applied electric field.

Posted by Anisha Rahim 4 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Shashank 11 4 years, 4 months ago

Assertion is right and R is the correct explanation of A.

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ℝ??? ??? ????????? ?????? ??? ?????? ??? ?????????:- Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms. Also Resistivity, the electrical resistance of a conductor of unit cross-sectional area, and unit length. … A characteristic property of each material, resistivity is useful in comparing various materials on the basis of their ability to conduct electric currents. 1. Resistivity is independent of:- * 1 point nature of material temperature dimensions of material none of the above 2. As compare to short wires, long wires have _______ resistance. * 1 point more less same zero 3. As compare to thin wires, thick wires have _______ resistance. * 1 point more less same zero 4. The resistance of a wire depends upon: * 1 point cross-sectional area length of wire wire’s nature all of the above

Posted by Vinay Kumar 4 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Sher Singh 4 years, 4 months ago

1. Dimension of material 2. More 3. Less 4. All of the above

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Bhumika Agrawal 4 years, 4 months ago

1. Nature of material 2. More 3. Less 4. All of the above

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ANSWER

Posted by Vinay Kumar 4 years, 4 months ago

CBSE > Class 12 > Physics

3 answers

Sher Singh 4 years, 4 months ago

1. Dimensions of material 2.more 3.less 4.all of above

1Thank You

Tec Om 4 years, 4 months ago

1)none of the above 2)more 3)less 4)all the above

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Bhumika Agrawal 4 years, 4 months ago

1. Nature of material 2. More 3. Less 4. All of the above

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Best book for practice for MCQ questions for class 12th term 1st in physics please let me.

Posted by Saurav Kumar 4 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Prabhat Tiwari 4 years, 3 months ago

SL a Arora

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Aditya Keshari 4 years, 4 months ago

Sl arora

1Thank You

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What do u understand by the term permitivity

Posted by Scientist ..????? 4 years, 4 months ago

CBSE > Class 12 > Physics

5 answers

Prabhat Tiwari 4 years, 3 months ago

In simple word we can say that the capacity of substances to store electrical energy in the presence of electric field

0Thank You

Sahil Dhaliya 4 years, 4 months ago

Affecting force between two medium

0Thank You

Scientist ..????? 4 years, 4 months ago

Thanks you so much both of u

2Thank You

Kunishka Yadav 4 years, 4 months ago

Permitivity - The ability of a material to store electrical potential energy under the influence of an electric field . It is measured by the ratio of the capacitance of a capacitor with the material as dielectric to its capacitance with vacuum as dielectric.

3Thank You

Abhay Chauhan 4 years, 4 months ago

It's ability of medium

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