Electrical Energy Power

To find the electric energy consumed by a 60 W bulb operating for 10 hours a day, we need to use the formula for electrical energy consumption:

Given that the power of the bulb is 60 W and the time it operates per day is 10 hours, we substitute these values into the formula:

Thus, the electric energy consumed in operating the bulb for 10 hours a day is 0.6 kWh.

The electrical energy (in kWh) consumed in operating a bulb of 40 W for 5 hours a day in a month of 30 days is:

First, calculate the total energy consumed by the bulb in a day: $ $

Thus, the electrical energy consumed is 6 kWh.

A dynamo is a device used to convert mechanical energy into electrical energy by means of electromagnetic induction. As the auto rickshaw is started by pulling a rope, mechanical energy is used to rotate the dynamo, which generates electrical energy.

Thus, the correct answer is dynamo.

Power is measured in watts (W), which is energy per unit time (Joules per second).

Therefore,