An electric motor take 5 amperes current from a 220 volts supply line. Calculate the power of the motor and electrical energy consumed by it in 2 hours.
Here current (I) = 5amp, Potential difference(V) = 220 volt, time = 2h,
We have to find
Power (P) = ?
Energy (E) = ?
We know that
P = V×I
= 220×5
= 1100 watt
= 1.1 kW
Energy consumed, E = P × t
= 1.1 × 2
= 2.2 kWh