Measure the current flowing through the device and the voltage across it; multiply the current by the voltage to get the power in Watts.
Watts = Volts x Amps ; Watts = Amps2 x Resistance (steady state answers using friendly units)
Electronic
i have no idea what the answer to this question is , will someone please do it
name a device that convert the mechanical energy into electrical energy
The device which convert mechanical energy in to electrical energy is "Dynamo".
Electrical generator: A device for converting mechanical (kinetic) energy into electrical energy.
An electrical generator
A motor is one example of a device that converts electrical energy into mechanical energy.
The motor changes electrical energy into mechanical (torque) energy.
microphone
electric motor
A resistor is a device that impedes or limits the flow of electrical current in a circuit. It converts the current's electrical energy into heat (thermal) energy. A resistor reduces the amount of energy in a circuit and pumps it out as a heat.
A resistor is a device that impedes or limits the flow of electrical current in a circuit. It converts the current's electrical energy into heat (thermal) energy. A resistor reduces the amount of energy in a circuit and pumps it out as a heat.