20 J of work has to be done against an existing electric field to take a charge of 0.05 C from A to B. How much is the potential difference V B – V A ?
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(400 volts)
Sol. ∴ W ext = U B – U A
∴ 20 = q (V B – V A )
∴ V B – V A = 
= 400 V
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