Heating Effect of Current: Whenever the electric current is passed through a conductor, it becomes hot after some time. This is called the heating effect of current or Joule’s heating effect. The function of an electric bulb, electric press, geyser, immersion rod, etc. is based on Joule’s heating effect. Statement of Joule’s Law: It states that the amount of heat produced (Q) in a conductor is directly proportional to- i.e. Q ∝ I2RT⇒ Q = K x I2RTIn S.I.units, K = 1,⇒ Q = I2RT Joules⇒ Q = I2RT/4.18 Calories Expression for Joule’s Law: Consider a conductor AB of resistance … Continue reading Heating Effect of Current or Joule’s Law