Question

when we double the voltage of a simple circuit we double the,
1) current
2) power
3) resistance
4) both 1 and 2

Answer 1

Answer:

Option 4 both 0ne and two

Explanation:

If current is I and voltage is V, then resistance R=VI and power is given by P=V.I. As such when both the current and voltage in a circuit are doubled, resistance becomes R=2V21=VI and hence remains same. However, power becomes P=2V-2! -4V-I i.e. power becomes four times.