Question

A torch bulb is rated 2.5 V and 750 mA. Calculate its power, resistance and energy consumed if this bulb is lighted for 4 hours.​

Answer 1

Answer:

V = 2.5 V

I = 0.750000 A

P = V I

P = 2.5(0.750000)

P = 1.875 W

R = V/I

R = 2.5 / 0.750000

R = 3.33 ohm

E = P(t)

E = 1.875 ( 4)

E = 7.500 Wh

E = 27 (10³)

I hope you got it!!