Electromagnetic Fields & Induction
Authored by Joe Liaw
Physics
11th - 12th Grade
Used 35+ times
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22 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
___ Law says that the Induced current is proportional to the change of magnetic flux
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
___ Law says that a current produced by an induced emf moves in a direction so that its magnetic field opposes the original change in flux
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
As the north pole of the magnet is moved into the coil, the magnetic flux is _________.
increasing
decreasing
remains constant
depends on the speed of the magnet
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The turn is contained in a magnetic field such that the lines of induction of the magnetic field are parallel to the plane of the turn. Which statement is correct?
An induction current flows clockwise;
The induction current in the coil flows counter-clockwise;
The induction current in the coil will occur when the magnetic field induction changes;
There is no induction current in the coil.
5.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
A ring is originally oriented 30-deg from the magnetic field. Which of the following would increase the flux?
increasing the field
reversing the direction of the field
increasing 30-deg to 90-deg
decreasing 30-deg to 0-deg
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The magnetic field enclosed by a 0.5 m2 wire loop increases from 0T to 3T in five seconds. Which of the following could be used to calculate the voltage in the coil?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The magnetic field increases from 0T to 5T in the direction shown. What direction is current induced in the wire?
Clockwise
Counterclockwise
No current
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