1
MHT CET 2024 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The current in LR circuit if reduced to half What will be the energy stored in it?

A
4 times
B
2 times
C
half times
D
$\left(\frac{1}{4}\right)^{\text {th }}$ times
2
MHT CET 2024 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two coils of self-inductance 25 mH and 9 mH are placed close together such that the effective flux in one coil is completely linked with the other The mutual inductance between these coils is

A
34 mH
B
16 mH
C
15 mH
D
6 mH
3
MHT CET 2024 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Consider the following circuit. By keeping $\mathrm{S}_1$ closed, the capacitor is fully charged and then $S_1$ is opened and $S_2$ is closed, then

MHT CET 2024 9th May Evening Shift Physics - Electromagnetic Induction Question 18 English

A
At time $\mathrm{t}=0$, the energy stored in the circuit is purely in the form of magnetic energy.
B
At $\mathrm{t}>0$, there is no exchange of energy between $L$ and $C$.
C
At any time $\mathrm{t}>0$, the current in the circuit is in the same direction.
D
At any time $\mathrm{t}>0$, the instantaneous current in the circuit may be $\mathrm{V} \sqrt{\frac{\mathrm{c}}{\mathrm{L}}}$
4
MHT CET 2024 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A square loop ABCD is moving with constant velocity ' $\vec{v}$ ' in a uniform magnetic field ' $\vec{B}$ ' which is perpendicular to the plane of paper and directed outward. The resistance of coil is ' $R$ ', then the rate of production of heat energy in the loop is [ L - length of side of loop]

A
$\frac{B^2 L^2 V}{R}$
B
$\frac{B^2 L^2 V^2}{R}$
C
$\frac{B^2 L V^2}{R}$
D
$\frac{\mathrm{BLV}^2}{\mathrm{R}}$
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