Question

1. A uniform wire of resistance 50 is cut into five equal parts these parts are now connected in parallel then the equiva- lent resistance of the combination is ​

Answer 1

Answer:

10ohms

Explanation:

each part of wire contains the resistance of 50ohms only,

therefore,

1/R=1/50+1/50+1/50+1/50+1/50

=5/10

=1/10

so,1/R=1/10ohms

R=10ohms

Answer 2

Answer: 2Ω

Explanation:

Resistance of a wire is directly proportional to its length.

So, when we cut the wire into 5 equal parts, the resistance of each part will be 10 Ω.

On connecting these wires in parallel, the net resistance will be

1/R = 1/10+1/10+1/10+1/10+1/10

⇒R= 2Ω