
Ch 3 - L2 Inductance
Authored by Ahmed Negm
Physics
12th Grade
Used 2+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A loop of wire has a potential difference of 1.2 V across it. The loop has a self-inductance of 125 mH. How much time is required for the loop to increase the current through it by 0.25 A?
0.01s
0.02s
0.03s
0.04s
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the reason for the slow rate of change of the current intensity in a solenoid?
The solenoid emitting electromagnetic radiation
The solenoid always having a high resistance
Self-induced current opposes changes to the original current
The production of magnetic flux around the solenoid
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
less than 0.8 A
equal to 0.8 A
greater than 0.8 A
equal to zero
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A transformer consists of a primary coil and a secondary coil, each with the same number of turns, wrapped around an iron core. The coils have a mutual inductance of 32 mH.A current in the primary coil increases the magnetic flux through the core by 4.48 mWb.The current induced in the secondary coil is 1.4 A. How many turns does the coil have?
40
10
20
32
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
The following graph represents how the electric current intensity (𝐼) in a solenoid changes with time. The self-induction coefficient of the solenoid is 30 mH. What is the induced emf in the solenoid in the time period bc?
0 V
12 V
10 V
24 V
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
0.04 H
0.02 H
0.01 H
0.03 H
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
The mutual inductance between these two coils equals ..........
1 H
4 H
0.25 H
2 H
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