Question

When a switch is in the OFF position, (i) the circuit starting from the positive terminal of the cell stops at the switch. (ii) the circuit is open. (iii) no current flows through it. (iv) current flows after some time. Choose the combination of the correct answer from the following.

• A. all are correct
• B. (ii) and (iii) are correct
• C. only (iv) is correct
• D. only (i) and (ii) are correct

Answer 1

The correct option is B

(ii) and (iii) are correct

Switch:

1. A switch is an electrical component that is used to turn on and off various appliances such as televisions, washing machines, lights, and fans.
2. When the switch is turned off, the circuit is open and no current flows.
3. When the circuit is closed, the current will flow, indicating that the switch should be turned on.

The explanation of correct option (B):

When a circuit's switch is in the off position, the circuit remains open, and the current does not flow across it.

So, both (ii) and (iii) statements are correct.

The explanation for incorrect options (A), (C), and (D):

In all other options A, C, and B are incorrect because the current cannot flow if a switch is OFF.

Therefore, the correct option is B.