The cost at 5 paise/KWH of operating an electric motor for 8 hours which takes 15 amp at `110V` is

The cost of 2Rs/kWh of operating an electric motor for 10hours takes 10amp at 110V is:

The cost of 2Rs/kWh of operating an electric motor for 10hours takes 10amp at 110V is:

The cost of 2Rs/kWh of operating an electric motor for 10hours takes 10amp at 110V is:

The cost of 5 litres of petrol is 110 then the cost of 8 litres is ________

What determines the rate at which energy is delivered by a electric current?An electric motor takes 5A from a 220 V line. Calculate

A 660-W electric lheater is hdesigned to operate from 129V lines. What is the resistance? What current does it draw? What is the rate of production of heat in calories per second? If the line voltage drops to 110V. What is power does the heater takes in waits? (J=4.2 joules per calorie).

A house is fitted with 20 length of 60 watt each 10 fans consuming 0.5 ampere each an electric kettle of resistance 110 Omega . If the energy is supplied at 120 V and costs 150 paise kWh , calculate monthly bill for running these appliances for 6 hours a day (1 length = 30 days).

The efficiency of a motor is defined as the ratio of mechanical power output to that with input electric power. The motor is designed to operate at 100 V and it draws a current of 15 A . If output mechanical power of motor is 800 W, then calculate the efficiency of motor .