How many kilowatt hours are in a telephone?

Answer 1

AnswerA watt-hour is a measure of watts * time. One watt-hour is the amount of energy used by something drawing one wattbeing used for one hour. The kilowatt hour(symbol kW·h, kW h or kWh) is a unit of energy.

Energy delivered by electric utilities is usually expressed and charged for in kWh.
Note that the kWh is the product of power in kilowatts multiplied by time in hours; it is not kW/h.
Also note that watt is the rate at which energy is flowing.
For simplicity it means that a 1000 W device will consume 1 kWh in exactly 1 hour.
Also a 100 W bulb will consume 1 kWh in 10 hours.
(Watt is like speed and kWh is like distance )

Answer 2

The units are not interchangeable: a kilowatt is a unit of power, and a kilowatt-hour (one kilowatt applied for one hour) is a unit of energy.

Example:

A 100 watt bulb is, at any given time, using 0.1 kilowatts of energy. Using a 100 watt light bulb for one hour consumes 0.1 kilowatt-hours of electricity. Energy is only used by applying power for a finite period of time.

Answer 3

A mobile phone or a cordless phone generally has a battery rated in milliamp hours, which works out to a small fraction of one kilowatt hour. A conventional landline telephone does not store power at all.

Answer 4

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