Question

A switch is connected in a series circuit. If the contacts on the switch are opened, the resistance of the circuit (including the switch) will ? .

Answer 1

Answer:

Resistance become infinite

Explanation:

In series circuit when switch is closed then a current is flow which is equal to $\frac{V}{R}$, here V is voltage and R is resistance

But when switch is open then no current is flow in the circuit

So $\frac{V}{R}=0$, this is possible when resistance become infinite

So when switch is open then resistance of the circuit will become infinite