Question

15. When the length of a wire is increased five times then its resistance
becomes 50 ohms. Calculate its original resistance.
Ans. 2 ohm
harus radius​

Answer 1

Answer:

Let L be the length of the conducting wire and R be the resistance.

Since the resistance of a conductor is directly proportional to the length, therefore

At 5L resistance = 50 ohms

At L, resistance will be 50/5 = 10 Ohms