Question

Which part of the torch completes the circuit to make

it glow?

(a) Slide Switch contact

(b) Bulb

(c) Cells

(d) Reflector



i will you​

Answer 1

Slide Switch contact completes the circuit to make the torch glow.

• A torch glows when electricity passes through the bulb. This happens only when the bulb is part of a closed circuit.
• A switch works on the principle that no current flows through an open circuit. An open switch ensures an open circuit.
• When the switch is closed, the circuit is completed and the current flow, making the bulb glow.

Answer 2

(a) Slide Switch contact of the torch completes the circuit to make  it glow.

What is an electric circuit?

• An electric circuit is a closed path for current to flow.
• An electric circuit consists of a voltage source, a load and switch.

Mechanism of a torch:

• Bulb is the load that glows when circuit is complete.
• Cell is the source of direct current voltage.
• Reflector is used for reflecting the rays from glowing bulb to produce illumination.
• Slide switch contact is the key that closes the circuit and completes it.
• When the slide switch is put in a certain position, it completes the circuit and closes the path to allow flow of direct current.
• It depends on the switch to make the circuit as open circuit or closed circuit.