Question

Which of the following controls the flow of current in a circuit?

• A. resistor
• B. switch
• C. battery
• D. both (a) and (b)

Answer 1

The correct option is D

both (a) and (b)

Explanation of correct option:

(a) Resistor: Resistor is a device used in a circuit to control the flow of current as it resists the flow of electrons.

(b) Switch: The switch is also known as the key in a circuit, it also controls the flow of current.

Hence correct option is (d) i.e., Both (a) and (b).

Explanation of incorrect option:

(c) Battery: Battery provides the power to the circuit by converting chemical energy into electrical energy.

So, the correct answer is (d).