
Exploring Electromagnetic Induction
Authored by navya meera
Science
12th Grade

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does Faraday's Law state about electromagnetic induction?
Faraday's Law states that a change in magnetic flux induces an electromotive force in a circuit.
A constant magnetic field generates an electric current without any change.
Electromagnetic induction occurs only in superconductors.
Faraday's Law states that electric current can create a magnetic field without any flux change.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does Lenz's Law relate to the conservation of energy?
Lenz's Law has no relation to energy conservation principles.
Lenz's Law allows for the creation of energy from nothing.
Lenz's Law states that induced currents enhance changes in magnetic fields.
Lenz's Law demonstrates the conservation of energy by ensuring that induced currents oppose changes in magnetic fields, thus preventing energy creation.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is induced EMF and how is it generated?
Induced EMF is unrelated to magnetic fields.
Induced EMF occurs only in superconductors.
Induced EMF is created by a constant magnetic field.
Induced EMF is generated by a change in magnetic flux through a conductor.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Can you give an example of an application of electromagnetic induction?
Electric generators convert mechanical energy into electrical energy using electromagnetic induction.
Transformers convert electrical energy into mechanical energy using electromagnetic induction.
Induction cooktops rely on electromagnetic induction to cool food quickly.
Electric heaters use electromagnetic induction to generate heat.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the principle behind AC generators?
Mechanical friction
Chemical reaction
Thermal expansion
The principle behind AC generators is electromagnetic induction.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the direction of induced current relate to Lenz's Law?
The induced current flows in a direction that opposes the change in magnetic flux, as per Lenz's Law.
The direction of induced current is random and does not follow any law.
Lenz's Law states that induced current has no relation to magnetic flux changes.
The induced current flows in the same direction as the change in magnetic flux.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What factors affect the magnitude of induced EMF according to Faraday's Law?
The rate of change of magnetic flux, the number of turns in the coil, and the area of the coil.
The temperature of the coil
The strength of the electric field
The resistance of the circuit
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