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WAEC - Physics (1990 - No. 41)
A work of 30 joules is done is transferring 5 millicoulombs of charge from a point B to a point A in an electric Held. The potential difference between B and A is
1.7 x 10
-4
V
3.4x10
-4
V
1.5x10
-1
V
6.0 x10
3
V
1.2 x10
4
V
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