Created By : Vaibhavi Kumari

Reviewed By : Rajashekhar Valipishetty

Last Updated : May 17, 2023

Are you looking for a simple way to find Joule heating? Make use of our Joule Heating Calculator tool to get a rapid result. To obtain the joule heating value, simply enter the current flow, resistance, and time of the current flow in the fields and press the calculate button.

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Joules Law of Heating

The rate at which resistance in a circuit turns electric energy into heat energy is described by Joule's equation of heating. The link between the heat produced by an electric current flowing through a resistance is represented by Joule's first law.

Joule Heating Formula

The following is the Joule heating formula Q = I²Rt

  • Where, Q = amount of heat
  • I = electric current
  • t = time

When the current flow in the circuit and the current flow are stable, the amount of heat generated is proportional to the wire's electrical resistance; when the current supply and electrical resistance are constant, it is proportional to the square of the current flow through the circuit; and it is proportional to the time of flow.

For more concepts check out to get quick answers by using this free tool.

How to Calculate Joule Heating?

Along the lines are the simple procedures for calculating the heat produced by current flowing through a conductor.

  • Step 1: Calculate the electric resistance in a conductor using time and current.
  • Step 2:Multiply the electric current squared by the product of time and resistance.
  • Step 3: The result is referred to as Joule heating.

Joule Heating Example

Question 1:For 50 minutes, a heater with a resistance of 450 is connected to the main supply. What is the heat produced in the heater if a 15 A current flows through the heater's filament?




Current flow I = 15 A

Resistance R = 450 Ω

Time t = 50 min

The amount of heat produced by the heater Q = I²Rt

Q = 15^2 x 450 x 50 x 60

= 225 x 1350000

= 303750000

= 303.75 MJ

Hence, the amount of heat generated in the heater is 303.75 MJ.

Question 2: Calculate the amount of heat energy released by a resistance of 10 Ω when a current of 5 A is passed through it for 7 minutes.



Current flow I = 5 A

Resistance R = 10 Ω

Time t = 7 min

The amount of heat produced by the heater Q = I²Rt

Q = 5^2 x 10 x 7 x 60

= 25 x 4200

= 105000

= 105 MJ

Hence, the amount of heat is 105 MJ.

FAQs on Joule Heating Calculator

1. What is meant by Joule Heating?

When an electric current flows through a circuit, it raises the conductor's internal energy and increases the collision of electrons with the conductor's atoms, resulting in the formation of heat.

2. What are some of the uses of joule heating?

Joule Heating is employed in a variety of applications, including transportation, residential, and industrial equipment. Incandescent light bulbs, resistive stoves, automobile windshield heating, coffee makers, induction heating, and other appliances fall into this category.

3. How can I use the calculator to compute Joule Heating?

In the Joule Heating Calculator's defined input fields, enter the current flow, resistance, and time of the current flow. To verify the amount of generated heat in a fraction of a second with precise steps, tap the calculate button.

4. What is the joule heating effect formula?

The heat created in the current-carrying cable is calculated using the joule heating formula. Q = I^2Rt is the equation. Where, I = current, Q = heat, t = current flow time, and R = resistance.

5. What is the definition of a joule of heat energy?

One Joule is the amount of energy delivered in one second by a one-watt source of power. Thermal energy is also measured in joules. The equivalent of one calorie of heat is 4.186 J.