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1
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0
In which of the following circuit do we find the current and voltage in phase?
A
A purely resistive circuit
B
A circuit in which an inductor and a capacitor are in series.
C
A purely Inductive circuit
D
A purely capacitive circuit
2
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0
What should be the value of the inductance of the coil which is to be connected to 220 V , 50 Hz supply so that maximum current of $3 \sqrt{2} A$ flows through the circuit ?
A
$L=\left(\frac{22}{15}\right) H$
B
$L=\left(\frac{15}{11 \pi}\right) H$
C
$L=\left(\frac{11}{15 \pi}\right) H$
D
$L=\left(\frac{22}{15} \sqrt{2}\right) H$
3
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
An ideal inductor is connected across a capacitor. Oscillations of energy $K$ are set up in the circuit. The capacitor plates are slowly drawn apart such that the frequency of oscillations is quadrupled. The work done in the process is
A
15K
B
13K
C
zero
D
2K
4
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
If $R$ and $L$ denote resistance and inductance of a material, then the dimension of $L R$ will be:
A
$M^2 L^4 T^{-5} A^{-4}$
B
$M L T A^{-1}$
C
$M^0 L^0 T^0 A^0$
D
$M^{-1} L^4 T A^{-3}$
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