Question

Three long wires (1,2&3) of resistance in the ratio 3:4:5 are connected in parallel to each other as shown in the diagram. If net force on middle wire is zero. Then d1/d2 will be

Answer 1

Answer:

The wires are in parallelt and ratio of their resistances are

, Hence currents in wires are in the ratio

<br> Force between top and middle wire is <br>

<br> Force between bottom and middle wire <br>

<br> As the forces are equal and opposite so

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