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This is an MCQ-based quiz on the topic of Introduction to Electromagnetism.
This set of MCQs helps you brush up on the important physics topics and prepare you to dive into skill practice and expand your knowledge.
Concentrates the external B-Field to maximise torque
Magnets
Iron core
Split ring
Armature
Provides the external B-Field
Magnets
Iron core
Split ring
Armature
Reverses current every 180° to ensure unidirectional torque
Magnets
Iron core
Split ring
Armature
Transmits current which interacts with the B-field
Magnets
Iron core
Split ring
Armature
The Law that states the direction of induced current always opposes the change in the circuit or magnetic field that produces it
Faraday’s
Lenz’s
Ohm’s
Snell’s
A current runs through a wire such that it generates a magnetic field. The magnetic field is in the clockwise direction in the plane of your computer screen. What is the direction of the current?
Into the screen
Out of the screen
Clockwise
Counter clockwise
A current runs through a straight wire from right to left. What direction would the magnetic field be?
Into the screen
Out of the screen
Clockwise
Counter clockwise
A straight wire carries a current directly into your computer screen. In what direction would the magnetic field be?
Into the screen
Out of the screen
Clockwise
Counter clockwise
A straight wire carries a current directly out of your computer screen. In what direction would the magnetic field be?
Into the screen
Out of the screen
Clockwise
Counter clockwise
A negatively charged particle is moving to the right along a vertical plane. If the force generated by a constant magnetic field is directed upwards within plane, in what direction is the magnetic field?
Upward
Out of the plane
In the plane
Downward
