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What is the direction of unit positive charge (test charge )?

Posted by Raman Pratap 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is the direction of earth's magnetic field?

Posted by Simranjot Kaur 7 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Nitish Sharma 7 years, 1 month ago

South to north

Ayush Gupta 7 years, 1 month ago

hii

ANSWER

Why is there no way to separate internal resistance from the e.m.f of a cell?

Posted by Jaspreet Kaur 7 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Jaspreet Kaur 7 years, 1 month ago

Why not??

Vishal Kumar 7 years, 1 month ago

No way

ANSWER

Electromagnetic induction question 7 of ncert . How come the direction of emf be found , i know fleming rule but what other trick will u suggest plus earth magnetic field is from south to north that meant in this case B (magnetic field) should b out of plane right correct me if i am wrong

Posted by Anshu Deo 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Kineti energy

Posted by Ashish Ashish 7 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Himanshu Baranwal 7 years, 1 month ago

The energy possessed the elements by virtue of its motion is called kinetic energy.

Jaspreet Kaur 7 years, 1 month ago

Energy contained by a body due to its motion is called kinetic energy

ANSWER

What is the meaning of, Unlike mass,the electric charge on an object is not affected by the motion of a body

Posted by Jaspreet Kaur 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Derive relationship between resistance and drift velocity

Posted by Ekam Jot Kaur 7 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Jaspreet Kaur 7 years, 1 month ago

V=IR I=nA×drift velocity ×e V =n×a×driftvelocity×e×R R=V/n×a×drift velocity ×e So, R=1/drift velocity

Anshu Deo 7 years, 1 month ago

Jaspreet kaur how u got this relation

Jaspreet Kaur 7 years, 1 month ago

R=1/drift velocity

ANSWER

Why resistivity not depend on dimensions?

Posted by Siva Dasan 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Why are equipotential surface are do not cross

Posted by Adarsh Rajput 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Chris George 7 years, 1 month ago

Equipotential surface never cross each other because if they do so then force on the charge at that point will have to directions which is not possible.

ANSWER

Why electrons can not be accelerated by a cyclotron?

Posted by Aditya Pal 7 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Arpit Kumar Sharma 7 years, 1 month ago

Because they are negatively charged

Chris George 7 years, 1 month ago

Electrons cannot be accelerated by a cyclotron because they have less mass as a result they will accelerate easily and will not follow the required trajectory.Hence ,failing the resonance condition.

Pal Sahab 7 years, 1 month ago

Bcz of less mass

ANSWER

The drift velocity of electrons in silver wire with cross sectional area 3.14 ×10_6 m2 carryingg a current of 20 a is 6.798× 10_C find value of x atomic weight of Ag =108 density of silver =10.5 ×103 kg m3

Posted by Rekha Mittal 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Calculate the binding enrg of 26Fe56 given mass of fe is 55.935

Posted by Ajin Sreekumar 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

what is the formula of equivalent resistance ??

Posted by Ashish Yadav 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Prerna Kumari 7 years, 1 month ago

For series combination, Equivalent resistance = sum of all the resistance of the combination i.e., R = R1+R2+R3 For parallel combination, Reciprocal of equivalent resistance = sum of reciprocal of each resistance of the combination i.e., 1/R=1/R1+1/R2+1/R3

ANSWER

Can a non-medical student can become ias officer?

Posted by Harleen Kaur 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Richa Keshari 7 years, 1 month ago

Ya sure

ANSWER

Is it true that from next year class 12 is going to have half syllabus

Posted by Krishna Rama 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Richa Keshari 7 years, 1 month ago

Ya its true... Congo to the next batch!

ANSWER

Dielectri

Posted by Rudraksh Kukreti 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Arti Vishwakarma 7 years, 1 month ago

Dielectric is a type of insulator which is use as electric appleance

ANSWER

Why the voltage is always mutiple of 11 (like 110v,220v,440v)?

Posted by Aj Style 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

An isolated conductor cannot have a large capacitance, why ?

Posted by Divyanshi Mishra 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What should be the charge on a sphere of radius 4cm, so that when it is brought in contact with another sphere of radius 2cm carrying current of 10 micro C, there is no transfer of charge from one sphere to the other..

Posted by Fazna Sudheer 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Wheat stone bridge

Posted by Abhi Mohit 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is magnetic feild on the axis of a circular curent loop

Posted by Ankit Bahuguna 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

As K 7 years, 1 month ago

B=u°(mu not) NIA/2π(√r^2+a^2)^3/2

ANSWER

What is ideal electic diople

Posted by Raghvendra Pratap 7 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Himanshu Baranwal 7 years, 1 month ago

An arrangement of two charges placed at the separation of 2r is called electric dipole.

Mohit Sepat 7 years, 1 month ago

The dipole when distance i.e.2a is minimum and charge is maximum.

ANSWER

Which is greater volt or electron volt?

Posted by Akshay Satish 7 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Anushka Priya 7 years, 1 month ago

Its electron volt because E-V =Ir or, E = V + Ir

Akhilesh Yadav 7 years, 1 month ago

Volt.

ANSWER

What is difference between voltmeter and voltammeter?

Posted by Akshay Satish 7 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Anushka Priya 7 years, 1 month ago

Voltammeter is the combination of voltmeter and ammeter whereas voltmeter ......

Purnima Gupta 5 years, 5 months ago

Mgdjdbdhsbvdjxodnyevdjbrr

ANSWER

Why are the connections between the resistor in a meter bridge made of thik copper strips

Posted by Gaurav Kumar 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Ajay Singh 7 years, 1 month ago

Because it have very low resistivity so current flow easily

ANSWER

Explain Biot Savart law in simple words

Posted by Yo Yo Honey Singh ? 7 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Subhash Chand 7 years, 1 month ago

This law state,"The magnetic field intensity at a point due to current carrying conductor"

Sandeep Suman 7 years, 1 month ago

the intensity of magnetic field due to current conductor is determined with the help of this law.

ANSWER

what is the magnitude of force experienced by a stationary charge exposed to a uniform magnetic field?

Posted by Yo Yo Honey Singh ? 7 years, 1 month ago

CBSE > Class 12 > Physics

5 answers

Ajay Singh 7 years, 1 month ago

Because it creates only elctric feild

Akhilesh Yadav 7 years, 1 month ago

No k is not permotivity of free space xsylon not is permitivity of free space.

Sandeep Suman 7 years, 1 month ago

and that above answer is wrong because k is not permittivity od free space sorry

Sandeep Suman 7 years, 1 month ago

ops its q(V×B) and the above answer is for electric force

Sandeep Suman 7 years, 1 month ago

simple kq1q2/r2, where K is permittivity of free space

ANSWER

Obtain the expression for the emf induced in a coil having N turns each of cross sectional area A rotating with a constant angular speed w in a magnetic field directed perpendicular to the axis of rotation

Posted by Muskan Pandey 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Four nuclei of an element undergo fusion to form a heavier nucleus,with release of energy. Which of the two the parent and daughter nucleus would have higher binding energy per nucleon?

Posted by Nishant Nayak 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Anjana Sherawat 7 years, 1 month ago

Daughter nucleus

ANSWER

Can a resistance be negative

Posted by Paras Jain 7 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Manoj Kumar Gupta 7 years, 1 month ago

No voltage be never be negative so, resistance can be never be negative

Anurag Singh 7 years, 1 month ago

Ya when voltage negative

ANSWER

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