Question

6. The resistance of a given wire is 24 ohm . What will be it's new resistance if (a) only the length of a conductor is increased to 3 time of it's original length , and (b) only the cross - section area of the wire is doubled ?​

Answer 1

Answer:

Explanation:

a) Resistence does not depend on capacitance

so net resistance is R

b) R inversely proportional to area of cross section

as

R = (row)l/A

so the resistance is halved when cross section doubled

Net Resistance = R/2