7) E
A – Wrong
Voltage = current x resistance = amp x ohm. Hence amp/ohm is wrong.
B – Wrong
We cannot prove voltage = coulomb per joule
C – Wrong
joule/second is the unit of power
D – Wrong
We cannot prove voltage = newton per coulomb
E – Wrong
We know power = voltage x current. voltage = power/current = watt/amp = watt per amp