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What is whearstone bridge?

Posted by Paridhi Sharma 7 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Swati Singh 7 years, 2 months ago

At the place of 2 and 1 u can write another digits or letters it depends upon how you draw digram and give name

3Thank You

Swati Singh 7 years, 2 months ago

If four resistors are arranged in such a way that they form a bridge. If key k2 switch on first then the key k1 and galvanometer shows none deflection then the bridge is said to be balanced condition and ratio of resistors of adjacent side become equal.

3Thank You

ANSWER

What is convention current?

Posted by Akshay Satish 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Rishabh Sahu 7 years, 2 months ago

The direction of flow of positive charges is assumed from positive to negative terminal and is used because of convention (used historically and not changed to avoid inconvenience). Actually electric current occurs due to flow of negative charges in the opposite direction .

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ANSWER

Project on communication system and propagation of electromagnetic waves in atmosphere

Posted by Anshika Rain 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is the geometrical shape of equilibrium surfaces due to a single isolated charge

Posted by Divya Choudhary 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Two charges of magnitude -2 and +Q are located at points (a , 0 ) and ( 4a , 0 ) respectively . what is the electric flux due to these charges through a sphere of radius ' 3a' with its centre at the origin

Posted by Divya Choudhary 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Force of attraction between two point charges placed at a distance 'd' apart in a medium is F. What should be the distance in the same medium so that the force of attraction between them becomes 9F?

Posted by Umesh Chander 7 years, 2 months ago

CBSE > Class 12 > Physics

4 answers

H!Mαη$Hμ Ұαδαυ ✔️ 7 years, 2 months ago

F=kq1q2/d^2 ....given... ,In same medium means k is same and charges are also same Force becomes 9 times ,i.e. 9F... ,9F=kq1q2/x^2....... ,9kq1q2/d^2=kq1q2/x^2..... ,9/d^2=1/x^2..... ,x^2=d^2/9.... ,x=d/3....

1Thank You

Umesh Chander 7 years, 2 months ago

But i want solution

0Thank You

Umesh Chander 7 years, 2 months ago

I know answer is d/3

0Thank You

Ajay Kumar 7 years, 2 months ago

Distance- d/3

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Why charge density on the sharp and pointed ends of a conductor is heigher than on its flatter points.?

Posted by Kanishk Verma 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Restivity of earth

Posted by Harendra Singh 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Three point charges q,2q and 8q are to be placed on a 9cm long straight libe.Find the position where the charges should be placed such that the potential energy of this system is minimum.In this situation,what is the electric field at the charge q due to the other two charges?

Posted by Hensi Rarhore 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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What are current carrier?indicate current carrier in metals,semiconductors and electrolytes

Posted by Raj Nandani 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Energy density of an electric field

Posted by Prince Kumar 7 years, 2 months ago

CBSE > Class 12 > Physics

3 answers

Aarav Raj 7 years, 2 months ago

Energry. Charge per unit volume.

0Thank You

Narendra Dubey 7 years, 2 months ago

Flowing of charge is called electric current and this phenomena is called electricity.

0Thank You

Avinash Kumar 7 years, 2 months ago

What is electricity?

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the center of the loop what is magnatic field

Posted by Shailesh Chauhan 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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why inside the sphare electric field zero??

Posted by Naveen Kumar 7 years, 2 months ago

CBSE > Class 12 > Physics

3 answers

Satendra Singh 7 years, 2 months ago

According to gauss law q/e. Q=0 (inside the conducting sphere ) E.∆s=q/e. Then e=0

0Thank You

Swati Singh 7 years, 2 months ago

Yaa because there is no charge ( inside the sphere in which electric influences are not experience is called electrostatic shielding)

1Thank You

Uday Pratap 7 years, 2 months ago

Because there is no charge inside the sphere

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Why plastic comb gets electrified on combing dry hair in summer?

Posted by Fayaz Ahmad 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Abhinav Sharma 7 years, 2 months ago

Initially the comb is negatively charged The comb gets polarized and transfer of electrons takes place from the comb to the hair. Then comb becomes positively charged and attracts small pencil shavings

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ANSWER

Why doyou hear soft crackle while removing polyster clothing?

Posted by Fayaz Ahmad 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Ayushi Sambyal 7 years, 2 months ago

Bcoz of the charge generated due to the rubbing of cloth against the skin

2Thank You

ANSWER

Working of electroscope

Posted by Ganesh Patel 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Use gauss theorem to derive an expression for the electric field near a charged conductor

Posted by Puneett Kumar 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Explain Hysteresis ?

Posted by Amreen Fatma 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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Dielectric constant for insulator

Posted by Nitin Kumar 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

A certain electric motor wires that carry a current of 5A are perpendicular to magnetic field of 0.8T what is the force on each centimetre of the wire

Posted by Priyanka Rani 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

A metallic pumpkin and another metallic lady's finger are given same charges.which one may probably lose charge

Posted by Vijay Narayan 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Hemant Gupta 7 years, 2 months ago

Metallic lady finger

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ANSWER

An electric dipole of dipole moment 20cm is enclosed by a closed surface what is the flux coming out if surface

Posted by Kajal Parjapat 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

An infinity large thin plane sheet has a uniform surface charge density +sigma. Obtain the expression for the amount of work done in bringing a point charge 'q' from infinity to a point, distance 'r', in front of the charged plane sheet.

Posted by Neha Dhangada 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is electri flux

Posted by Himanshu Yadav 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Gulshan Kaur 7 years, 2 months ago

It is defined as number offield lines passing through that given area

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ANSWER

A uniform wire of resistance 12 ohm is cut into three pieces in the ratio 1:2:3 and the thhree pieces are connected to form a triangle. A cell of emf 8 V and internal resistance 1 ohm is connected across the highest of the three resistors. Calculate the current through each part of the circuit.

Posted by Adii Tyagi 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Two point charges of +2macro coulomb and +6macro coulomb repel each other with the force of 12N. If each is given an additional charge of -4macro coulomb then what will be the new force

Posted by Amrit Chetry 7 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Science Student 7 years, 2 months ago

Write the expression of forces for both the cases. Then divide them. Distance^2 and the constant will be canceled. Solve it you will get the answer. If you still don't get then do ask.

0Thank You

Science Student 7 years, 2 months ago

Attract with a force of 4N.

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The body which produces sound in the form of ? Translatory motion Rotatory motion Vibration Rest

Posted by Gunjan Kumari 7 years, 2 months ago

CBSE > Class 12 > Physics