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Question

Assume that an electric field ¯E=30x2ˆi exists in space. Then the potential difference VAVO, where VO is the potential at the origin and VA the potential at x=2m is :

A
80V
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B
80V
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C
120V
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D
120V
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Solution

The correct option is A 80V
Answer is A
¯E=30x2ˆi
dV=E.dx
VAV0dV=2030x2dx
VAV0=80Volt

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