Question

how will the magnetic field produced in a current carrying circular coil change
I)if the radius of the coil increased by three times​

Answer 1

Answer:

1/9 times. Please mark this answer as the Brainliest one as I deserve it for giving you the entire step-by-step solution.

Explanation:

As radius of the coil increases by 3 times, the cross-sectional area also increases by 9 times (as area is directly proportional to the square of radius).

Also, current in a current carrying circular coil is inversely proportional to the cross-sectional area; current will decrease 9 times.