Question

an electric lamp is connected to a 12v battery it draws a current 0.5a find the power of the lamp

Answer 1

Answer:

6 watts

Explanation:

Power of the battery = 12v (Given)

Current drawn by the battery = 0.5a (Given)

Power is defined as the rate at which a work is done. Since, the work is energy transfer, power is also the rate at which energy is expended. As per the Ohm's law equation, the formula for power is - V = I × R or

Power = Voltage x Current  

Power = 12 x 0.5

Power = 6

Power = 6 watts

Thus, if an electric lamp is connected to a 12v battery it draws a current 0.5a then the power of the lamp is 6 watts.

Answer 2

Answer:

6Watts

Explanation:

V=12v

I=0.5A

P=VI

P=12 x 0.5

P=6W