Question

A uniform wire of resistance 5 is cut into five equal parts are noe connected parallel. the equivalent resistance of the combination is _____​

Answer 1

Explanation:

We know that R∝l

On cutting the wire into five equal parts, length of each part becomes one-fifth and hence resistance of each part=R=

5

50

=10Ω

When all five wires of resistance R are connected in parallel, equivalent resistance becomes

5

R

=

5

10

=2Ω