The strength of the magnetic field between the poles of an electromagnet would be unchanged if:
(a) current in the electromagnet winding were doubled
(b) direction of current in electromagnet winding were reversed
(c) distance between the poles of electromagnet were doubled
(d) material of the core of electromagnet were changed

Academic Physics NCERT Class 10

(b) direction of current in electromagnet winding were reversed

Explanation

The options other than b, the strength of the magnetic field between the poles of an electromagnet can change because the strength of magnetic field produced by a solenoid depends on the number of turns, current and material of the core of the electromagnet.

Tutorialspoint

Simply Easy Learning

Updated on: 10-Oct-2022

92 Views

Kickstart Your Career

Get certified by completing the course

Get Started

Advertisements