NEET Physics Question - Current Electricity - Measuring Devices ( Galvanometer, Voltmeter and Ammeter & Meter Bridge )

Assertion (A): Electric appliances with a metallic body have three pin connections whereas an electric bulb has two pin connections.

Reason (R): Three pin connection reduces heating of connecting cable.

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

Assertion (A) is true. Metallic-bodied appliances require a third pin for earthing for safety. Electric bulbs usually do not. Reason (R) is false. The third pin (earth) is for safety, to prevent electric shock in case of a fault, not to reduce cable heating.

Rankers Physics

Electric Appliances and Three-Pin Connections

Solution:

Leave a Reply Cancel reply