Physics
Write an expression for the electrical energy spent in flow of current through an electrical appliance in terms of current, resistance and time.
Related Questions
An electrical appliance has a rating 100 W, 120 V. The resistance of element of appliance when in use is —
- 1.2 Ω
- 144 Ω
- 120 Ω
- 100 Ω
A bulb is rated 100 W-220 V. It is being used at 110 V supply. The power consumed by bulb is:
- 100 W
- half of 100 W
- nearly 25 W
- none of the above
Write an expression for the electrical power spent in flow of current through a conductor in terms of (a) resistance and potential difference, (b) current and resistance.
State the S.I. unit of electrical power.