Question

Question 10:
An electric lamp is labelled 12 V, 36 W. This indicates that it should be used with a 12 V supply. What other information does the label provide ?

Lakhmir Singh Physics Class 10

Answer 1

Answer:

This indicates that if it is used with a 12 V supply it will expenditure 36 jul energy/second.

Answer 2

Answer:

Explanation:

Voltage = 12 V  (Given)

Power = 36 W  (Given)

Power = Voltage × Current

Therefore,

Current supplied -

36 = 12 × Current

Current = 36/12

= 3

Thus, the current supplied in an electric lamp is 3 A.

If an electric lamp is labelled 12 V, 36 W. This indicates that it should be used with a 12 V supply, then the other information is that the label will consume energy at the rate of 36 J/s.