Electric Power

Which of the following is a unit of electric power?

What is meant by power rating of an electrical appliance? A bulb is rated as $60 \mathrm{W}$, $220 \mathrm{V}$. What does it indicate?

If a bulb of $60 \mathrm{W}$ is connected across a source of $220 \mathrm{V}$, find the current (in ampere) drawn by it.

An electric bulb is rated $220 \mathrm{V}$ and $100 \mathrm{W}$. When it is operated on $110 \mathrm{V}$, the power consumed will be –

$1 \mathrm{kW} \mathrm{h}$ is equal to

An electric refrigerator rated $400 \mathrm{W}$ is used for $8$ hours a day. An electric iron box rated $750 \mathrm{W}$ is used for $2$ hours a day. Calculate the cost (in rupees) of using these appliances for $30$ days, if the cost of $1 \mathrm{kWh}$ is $₹3$.

An electric bulb is connected to a source of $220 \mathrm{V}$ and the current flowing through the circuit is $0.5 \mathrm{A}$. Calculate the power of the bulb in watts?

An electrical device is said to consume $1 \mathrm{kw} \mathrm{hr}$ of energy if it consumes-

If the voltage in the circuit doubles and the current is halved, the electric power

Electrical energy used during a month is expressed in terms of _______.

1 kWh = ? J

The unit of Power is ___________.

Find the energy in $\mathrm{kWh}$ consumed in $10$ hours by four devices of power $500 \mathrm{W}$ each.

An electric heater is rated 1500 W. How much energy does it use in 10 hours?

A certain household has consumed $250$ units of energy during a month. How much energy is this in joules?

$1 \mathrm{kilowatt} \mathrm{hour} \left(\mathrm{kWh}\right)$ is _____.

The commercial unit of electric energy commonly called as 'unit' is?

An electric bulb is connected to a $300 \mathrm{V}$generator. The current is $0.75 \mathrm{A}.$ What is the power of the bulb?

For an electric iron which consumes $1 \mathrm{kW}$ electric power when operated at $550 \mathrm{V}$, which of the following fuses must be used?

An electric bulb is rated $220 \mathrm{V}$ and $100 \mathrm{W}$. When it is operated on $110 \mathrm{V}$, the power consumed will be _____?