Multiple Choice
A common electromagnet consists of a
A) bar magnet that carries an electric current.
B) current-carrying wire coil.
C) current-carrying coil with a piece of iron inside.
Correct Answer:

Verified
Correct Answer:
Verified
Q24: Like kinds of magnetic poles repel while
Q25: Surrounding every stationary electron is<br>A)a magnetic field.<br>B)an
Q97: The sloshing of electrons inside a generator
Q98: An electric generator<br>A)can create enough energy to
Q99: A galvanometer calibrated to read current is<br>A)an
Q100: The frequency with which a magnet plunges
Q101: An ideal transformer has 50 turns in
Q103: Every spinning electron is<br>A)electrically charged.<br>B)a tiny magnet.<br>C)both
Q106: A copper ring can be made to
Q107: Earth's magnetic field affects cosmic rays by<br>A)deflecting