Electric power.

The Watt. What? The Watt.

Electric power = current X voltage

1 watt = 1 ampere X 1 volt

When charge flows through a conductor it expends energy. This results in a coil heating, a light globe glowing or a motor turning. Electric power can be defined as the rate at which electrical energy is converted to other forms of energy such as heat , in the case of a toaster or mechanical energy in the case of motor.
A light globe rated at 100 watts is plugged into 240 volt outlet.Using the formula for electrical power we can calculate the current it draws at 0.42 (100/240) amperes.
An electric fan has the label pictured on the right. It to is plugged into a 240 volt outlet. Since it is rated at 50 watts it draws half as much current as the 100 watt globe. The current it draws is 0.21 amperes.

1) A tradesman uses a 1200 watt electric drill. His mate uses another drill rated at 1400 watts. Will a 10 amp safety fuse blow if the appliances are connected to a 240 volt outlets?

2) What is the current drawn by a 1000 watt hairdryer when it is plugged into 240 volt outlet?

3) An electrical appliance is rated at 400 watts and draws a current of 2 amperes. At what voltage is electricity supplied to this house?

4) What is the current, in amperes, flowing through a 80 watt light globe if it is connected to a 200 volt power source?
Selling electricity
The elastic band provides the tension to automatically close the gate. Metal contacts that complete the circuit and cause the light to glow when the gate is shut The light indicating if the gate is open or closed An electromagnet that activates the lock The bolt that is lifted through a scre eye by the electromagnet The gate
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