MCAT_2021_XII_ELECTROMAGNETIC INDUCTION
Electromagnetic Induction Quiz
Test your knowledge of electromagnetic induction with our engaging quiz! With 10 thought-provoking multiple-choice questions, this quiz covers key principles such as motional emf, induced currents, and the workings of generators and transformers.
Perfect for students and enthusiasts alike, you can enhance your understanding of crucial concepts in physics related to electromagnetism. Topics include:
- Motional emf
- Induced current
- AC and DC generators
- Transformers
- Eddy currents
Motional emf can be increased by:
Increasing the speed of rod
Using the stronger magnetic field
Both
None
Negative sign shows that the direction of _______ is such that it oppose the change it.
Induced emf
Induced current
Induced magnetic induction
None
The direction of induced current is always such as to oppose the change which causes the
Voltage
Current
Emf
None of the above
VsA-1=
Magnetic field
Henry
Potiential difference
AC generator works on the principle of
Henry law
Ohms law
Faraday law of electromagnetic induction
None
DC generator uses
It uses split rings
It uses slip rings
Both
None
Transformer works on the principle of ______________
Self induction
Mutual induction
None of the above
Ohms law
Eddy current cause the energy loss in core due to heat produced in it.
True
False
None of the above
0
*What is the direction of the current through resistor R when switch S is closed
Right to left
Left to right
Will not move
Infinity
An ideal step down transformer is connected to main supply of 240V. It is desired to operate a 12V, 30W lamp. Find the current in the primary
0.125A
12.5A
125.2A
122000
None
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