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Electric Potential and Potential Difference

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Question

what is meant by statement,"potential difference A to B in an electric field is 1V".

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Solution

We know that,
Potential difference V=W/Q
So if 1 joule of work is done to move a charge of 1 coulomb from point A to point B then,
V=1/1=1volt
(the potential difference is 1V).

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Similar questions

What is meant by saying that the potential difference between two points in 1V.

Q. Question 2
What is meant by saying that the potential difference between two points is 1 V?

Q. (a) Name a device which helps to maintain a potential difference across the ends of a conductor.
(b) What is meant by saying that the potential difference between two points is 1 V?
(c) Define Ohm's law. Write an expression for it.
(d) What is the unit of resistance?
(e) When the potential difference between the terminals of an electric heater is 110 V, a current of 5 A flows through it. What current will flow through the heater if the potential difference is increased to 220 V? What is the resistance of heater?

Q. An electric field is expressed as

\to E = 2^i + 3^j

. Find the potential difference

(V_{A} - V_{B})

between two points A and B whose position vectors are given by

r_{A} =^i + 2^j

r_{B} = 2^i +^j + 3^k .

Q. (a) What is meant by heating effect of electric current ? Give two applications of heating effect of current.
(b) State the law relating heat dissipated in an electric circuit with the current, potential difference and time.
(c) 50 J of heat is produced each second in a

2 Ω

resistor. Find the potential difference across the resistor.

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