Question Detail

PHY 102 Electromagnetic Induction 2 Objective Question

Question

Which of the following is NOT listed as a method to change the magnetic field and induce an emf, according to Faraday's First Law?
Options
A Moving a magnet towards or away from the coil.
B Increasing the ambient temperature around the coil and magnet.
Correct Answer
C Changing the area of a coil placed in the magnetic field.
D Rotating the coil relative to the magnet.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 9 lists four methods to change the magnetic field: moving a magnet, moving the coil, changing the coil's area, or rotating the coil. Increasing ambient temperature is not mentioned.

Hint

All valid methods involve altering the magnetic flux linking the coil, not just the environment's temperature.

Question Info