1
MHT CET 2022 11th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

The magnetic flux through a coil of resistance '$$R$$' changes by an amount '$$\Delta \phi$$' in time '$$\Delta \mathrm{t}$$'. The total quantity of induced electric charge '$$\mathrm{Q}$$' is

A
$$-\frac{\Delta \phi}{\Delta \mathrm{t}}+\mathrm{R}$$
B
$$\frac{\Delta \phi}{\Delta \mathrm{t}} \times \mathrm{R}$$
C
$$\frac{\Delta \phi}{\mathrm{R}}$$
D
$$\frac{\Delta \phi}{\Delta t}$$
2
MHT CET 2022 11th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

Self inductance of a solenoid cannot be increased by

A
decreasing its length
B
increasing its area of cross-section
C
increasing the current through it
D
increasing the number of turns in it
3
MHT CET 2022 11th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

A graph of magnetic flux $$(\phi)$$ versus current (I) is drawn for four inductors A, B, C, D. Larger value of self inductance is for inductor.

A
D
B
B
C
C
D
A
4
MHT CET 2021 24th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

A current 'I' produces a magnetic flux '$$\phi$$' per turn in a coil of '$$n$$' turns. Self inductance of the coil is '$$L$$'. The relation between them is

A
$$\mathrm{nLI}=\phi$$
B
$$\frac{\mathrm{nL}}{\mathrm{I}}=\phi$$
C
$$\frac{\mathrm{LI}}{\mathrm{n}^2}=\phi$$
D
$$\frac{\mathrm{LI}}{\mathrm{n}}=\phi$$
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