Download Aptitude Crack
img not found img not found

Magnetism and Electromagnetism - Engineering

Q1:

When the current through the coil of an electromagnet reverses, the

A direction of the magnetic field reverses

B direction of the magnetic field remains unchanged

C magnetic field expands

D magnetic field collapses

ANS:A - direction of the magnetic field reverses

The current direction is reverse so the direction of magnetic field reverse.