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The law that explains the generation of heat due to flow of current through a conductor is
1. Ohm's Law
2. Joule's Law
3. Kelvin's Law
4. Faraday's Law

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Correct Answer - Option 2 : Joule's Law

Joule's law of heating :

  • This law states that when the current (I) passes through a conductor of resistance (R) for time (t) then heat produced by the conductor is equal to the product of the square of the current, the resistance, and time.

 

H = I2Rt  joules

H = heat produced

I = current

R = Resistance

t = time

The unit is Joules.

Newton's Laws.

  • Newton's laws of motion relate an object's motion to the forces acting on it.
  • He gave three laws of motion -
    • The first law states that an object will not change its motion unless an external force acts on it.
    • The second law states that force experienced is proportional to its mass times acceleration.
    • The Third law of motion states that every action has an equal and opposite reaction.

 

Faraday's Law of Induction

  • It states that induced voltage in a circuit is proportional to the rate of change over time of magnetic flex through that circuit.

 

Ohm's law:

  • The relationship between the potential difference across a conductor and current flowing through it is determined by Ohm's law.
  • Ohm's law states that potential difference across a conductor is directly proportional to the current flowing through it.

V α I

i.e. V = IR

V = Potentioal difference

I = Current

R = Resistance. (constant)

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