Answer:
Current in outer circle will be 15.826 A
Step-by-step explanation:
We have given number of turns in inner coil

Radius of inner circle

Current in the inner circle

Number of turns in outer circle

Radius of outer circle

We have to find the current in outer circle so that net magnetic field will zero
For net magnetic field current must be in opposite direction as in inner circle
We know that magnetic field is given due to circular coil is given by

For net magnetic field zero

So

