A coil of self-inductance \(L\) is connected in series with a bulb \(\mathrm{B}\) and an AC source. The brightness of the bulb decreases when:

1. number of turns in the coil is reduced.
2. a capacitance of reactance \(X_C = X_L\) is included in the same circuit.
3. an iron rod is inserted in the coil.
4. frequency of the AC source is decreased.
Subtopic:  Self - Inductance |
 67%
From NCERT
AIPMT - 2013
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NEET 2023 - Target Batch - Aryan Raj Singh
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A current of \(2.5\) A flows through a coil of inductance \(5\) H. The magnetic flux linked with the coil is:
1. \(0.5\) Wb
2. \(12.5\) Wb
3. zero
4. \(2\) Wb
Subtopic:  Self - Inductance |
 85%
From NCERT
NEET - 2013
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The current (\(I\)) in the inductance is varying with time (\(t\)) according to the plot shown in the figure. 

          
Which one of the following is the correct variation of voltage with time in the coil?
1.   2.
3. 4.
Subtopic:  Self - Inductance |
 73%
From NCERT
AIPMT - 2012
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A long solenoid has \(500\) turns. When a current of \(2\) A is passed through it, the resulting magnetic flux linked with each turn of the solenoid is \(4\times 10^{-3} \) Wb. The self-inductance of the solenoid is:
1. \(2.5\) H
2. \(2.0\) H
3. \(1.0\) H
4. \(4.0\) H

Subtopic:  Self - Inductance |
 78%
From NCERT
AIPMT - 2008
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh