Transformer Quiz
Authored by CUDAL KEVIN
Physics
12th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main function of a transformer?
Generate magnetic field
Decrease voltage
Generate electric current
Increase voltage
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens if the number of turns in the secondary coil is more than the number of turns in the primary coil?
Voltage in the secondary is higher than the primary
Voltage in the secondary is zero
Voltage in the primary is higher than the secondary
Voltage in the secondary is equal to the primary
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can't transformers be used with a DC power supply?
DC does not induce magnetic flux
DC does not change the flux
DC does not have coils
DC does not generate electric current
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of a ferromagnetic core in a transformer?
To decrease the voltage
To ensure flux equality between coils
To increase the voltage
To generate magnetic field
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the effect of a step-up transformer?
Generate electric current
Generate magnetic field
Increase voltage
Decrease voltage
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does wireless charging work using a transformer?
Secondary coil inside the phone and primary coil in the charging pad
Secondary coil inside the charging pad and primary coil in the phone
Direct connection between phone and charging pad
No coils involved in wireless charging
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is Faraday's law of electromagnetic induction?
Voltage is induced by changing magnetic flux
Voltage is inversely proportional to resistance
Voltage is directly proportional to current
Voltage is induced by changing electric field
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