Energy Transfer In Electric Circuits Study Guide


Electric circuits are the path in which the electrons flow to generate the network for the electrical components. The wires collectively make up the path and can easily be powered by a battery. This provides the incentives to the electron, leading to the energy transfer in circuits. 



  • The meaning of energy transfer is the conversion of one form of energy into another form.

  • It is generally a movement of energy or flow of electrons through its path.

  • When the electrons or energy passes in its closed path, we term it an energy transfer in circuits.

  • These forms of energy transfer in circuits are called electric power. 

  • Moreover, electric power is the energy per unit of time converted due to the electrical circuit from one form of energy to another.

  • The formula of electric power is defined as E = I2Rt

  • Electric circuits are a closed-loop or path where the electric current flows.

  • This flow of energy occurs due to the closed path or circuit.

  • When the path is not closed, the energy won’t be able to pass through the circuit as the flow of electrons breaks down.

  • Therefore, in an open circuit, the energy transfer is not possible.



The energy transfer in electric circuits equations included the transfer of electrons by the electric current to the related charge of conductor and voltage. 

Its equation is: E = QV

Where E = Energy in joules

Q = Charge in coulombs 

V = Voltage in volts. 


There are various forms of energy transfer in electric circuits examples.

  • In the light bulbs
  • In the car battery
  • A lamp plugged into the switchboard
  • Cell phone batteries
  • Bread toaster at homes



  • Electric power is referred to as the rate at which the electrical energy is consumed by a device. 
  • Electrical energy itself can be expressed as the generation of energy because of the movement of electrons from their own charge to the charge of the conductor. The electrical power is multiplied by time, i.e., E = Pt.
  • Some examples of energy transfer are electric motors, bread toasters at homes, electric irons, etc.
  • The energy transfer in the electric circuits equation is E = QV.


1. How is energy transferred in a circuit?

The means of energy transfer in the circuit is by the closed-loop. When the circuit is completely closed at both ends, the energy is transferred from one form to another. And the rate of energy consumed per unit of time is called electric power. 

2. What are 10 examples of energy transfer?

  • Swinging of oscillation
  • Electric motor
  • Electric generator
  • Lighting of bulb
  • Car engine
  • Cell in the car or phones
  • Solar heater
  • Solar cell
  • Bread toaster at homes
  • Electric irons

3. What are the 5 energy transformations?

  • Chemical energy to electrical energy
  • Electrical energy to thermal energy
  • Chemical to mechanical energy
  • Light to chemical energy
  • Electrical energy to heat energy

4. Give the energy transfer in the electric circuits equation.

Energy transfer in electric circuits equation is E = QV.

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