1
MHT CET 2023 10th May Evening Shift
+1
-0

Two concentric circular coils having radii $$r_1$$ and $$r_2\left(r_2 << r_1\right)$$ are placed co-axially with centres coinciding. The mutual induction of the arrangement is (Both coils have single turn, $$\mu_0=$$ permeability of free space)

A
$$\frac{\mu_0 \pi r_2^2}{2 r_1}$$
B
$$\frac{\mu_0 \pi r_2}{2 r_1}$$
C
$$\frac{\mu_0 \pi r_2^2}{r_1^2}$$
D
$$\frac{\mu_0 \pi r_2}{r_1}$$
2
MHT CET 2023 10th May Morning Shift
+1
-0

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

A
A
B
B
C
C
D
D
3
MHT CET 2023 10th May Morning Shift
+1
-0

A square loop of area $$25 \mathrm{~cm}^2$$ has a resistance of $$10 \Omega$$. This loop is placed in a uniform magnetic field of magnitude $$40 \mathrm{~T}$$. The plane of loop is perpendicular to the magnetic field. The work done in pulling the loop out of the magnetic field slowly and uniformly in one second, will be

A
$$1 \times 10^{-4} \mathrm{~J}$$
B
$$1.0 \times 10^{-3} \mathrm{~J}$$
C
$$5 \times 10^{-3} \mathrm{~J}$$
D
$$2.5 \times 10^{-3} \mathrm{~J}$$
4
MHT CET 2023 10th May Morning Shift
+1
-0

Two conducting circular loops of radii '$$R_1$$' and '$$R_2$$' are placed in the same plane with their centres coinciding. If $$R_1>R_2$$, the mutual inductance $$M$$ between them will be directly proportional to

A
$$\frac{R_1}{R_2}$$
B
$$\frac{R_2}{R_1}$$
C
$$\frac{R_1^2}{R_2}$$
D
$$\frac{R_2^2}{R_1}$$
EXAM MAP
Medical
NEET