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Last Updated On 01-06-2023 - By Jeesha Sara

Two wires of same metal have the same length but their cross sections are in the retio 3:1. They are joined in series. The resistance of the thicker wire is . The total resistance of the combination is

a)

b)

c)

d)


Question ID - 150321 :-

Two wires of same metal have the same length but their cross sections are in the retio 3:1. They are joined in series. The resistance of the thicker wire is . The total resistance of the combination is

a)

b)

c)

d)

1 Answer
5876 Votes
3537

Answer Key : (c) -

(c)

 For the same length and same material,

The resistance of thick wire,

The resistance of thin wire

Total resistance



Next Question :

A copper wire of length  and radius  is nickel plated till its final radius become  but length remains . If the resistivity of nickel and copper be  and  respectively, the conductance of the nickelled wire is

a)

b)

c)

d)


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