Question

A torch bulb is rated 2.5v and 750mA what is power

Answer 1

Answer:

power formula P = VI

P = 2.5 × 750 = 1875 watts

Answer 2

Potential Difference(V) = 2.5 V

Current ( I ) = 750 mA = 750 * 10^-3 A

Power = ?

P = V * I

P = 2.5 * 750 * 10^-3

P = 1875 * 10^-3 W

P = 1.875 * 10^6 W