Electrical power and energy

A 10V lamp has a current of 2.5A passing through it. What is the electrical power being consumed by the lamp?

Definition of electrical energy

• a way used to transfer energy, it is easier. and better to transfer energy this way

• the power an atom's charged particles have to cause an action or move an object.

• The electricity due to the flow of electrons is known as current electricity

• a situation where electricity production and imports are not enough to cover electricity consumption

Calculate the electrical power supplied to a 12V electrical heater when the current passing through it is 3.0A.

• 36V

• 36W

• 4V

• 4W

An electrical motor consumes 20W of power when a current of 2.5A passes through it. What is the potential difference across the motor?

Definition of electrical power

• Rate (speed) at which energy is transferred

• the flow of electricity in an electronic circuit, and to the amount of electricity flowing through a circuit

• a measure of a material's ability to carry an electrical current.

• Rate (time) at which energy is transferred

An electrical motor consumes 20W of power when a current of 2.5A passes through it. What is the potential difference across the motor?

• 8V

• 8W

• 6V

• 6W