Two long parallel wires and are fixed apart and carry currents of and respectively

PHYSICS · Single correct · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism

Problem

Two long parallel wires

A

and

B

are fixed

10\,\text{cm}

apart and carry currents of

50\,\text{A}

and

30\,\text{A}

respectively, both directed vertically upward. A third parallel wire

C

is to be placed between

A

and

B

carrying a current of

40\,\text{A}

upward such that the net magnetic force on wire

C

is zero. At what distance from wire

A

should wire

C

be positioned? (a)

5.63\,\text{cm}

(b)

6.25\,\text{cm}

(c)

3.75\,\text{cm}

(d)

5.00\,\text{cm}