Question

a)
State Ohm's law. Mention the factors on which the resistance of a conductor
depend
b) State Joule's law of heating and write the mathematical formula of this
law.​

Answer 1

Answer:

1) Length: It is directly proportional to resistance of the conductor. 2) Area: It is inversely proportional to resistance to the cross sectional area of the conductor. 3) Temperature: It is directly proportional to resistance.

4) nature of material of conductor.

According to the Joule's law, when a current is passed through a conductor for a certain time, the conductor gets heated up and the amount of heat is given by :

H=i

2

Rt

H is the heat, i is the current, R is the resistance and t is the time.

Answer 2

Answer:

ohm's law defenation

potential difference across two points if a metallic conductor proportional to current passing through the circuit providing that temperature remains constant