Question

29. (a) Define Power and state its SI unit.
(b)
A torch bulb is rated 5 V and 500 mA. Calculate its
(i)
Power
(ii) Resistances
(iii) Energy consumed when it is lighted for 2.5 hours​

Answer 1

Answer:

a) The rate at which electric enery is consumed or dissipated in electric circuit.

S.I. unit of powet = watt (W)

b)

ii) V = 5 v

I = 500 mA = 5A

R = V / I

R = 5/5 = 1 ohm

i