Question

What is the potential difference between two points if it requires 220-uJ to move 10-uC charge from one point to the other?
A. 22 V
B. 45.454 mV
C. 2.2 V
D. 45.454 V

Answer 1

Answer:

The total work done = energy transferred.

so, we might see the equation energy = voltage x charge, E = V * Q, written as,

work = voltage x charge, W = V * Q.

In this case, the charge is 4 mC, that is, 0.004 C and work done is 2 J.

Therefore, V=W/Q = 2/0.004 = 500 V.

Hence, the potential difference between two points if 2 J of work must be done to move a 4 mC charge from one point to another is 500 V.

Answer 2

Answer:

22V

Explanation:

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