In the figure the potential at A is _____ when the potential at B is zero.
2V
B
2A V=0
A
VA
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The potential at A is 4 Volt.
Explanation:
- A negative voltage is obtained while moving from the positive to the negative side of a battery.
- Therefore we can write:
- Va - 2 × 1 - 2 = Vb
- Va - 4 = Vb
- Va = Vb + 4
- Now, put the value at point Vb = 0 which is gievn.
- Va = 4 Volt
- Therefore, Potential at A is 4 Volt
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