1
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A cylindrical magnetic rod has length $$5 \mathrm{~cm}$$ and diameter $$1 \mathrm{~cm}$$. It has uniform magnetization $$5.3 \times 10^3 \mathrm{~A} / \mathrm{m}^3$$. Its net magnetic dipole moment is nearly

A
$$1 \times 10^{-2} \mathrm{~J} / \mathrm{T}$$
B
$$0.5 \times 10^{-2} \mathrm{~J} / \mathrm{T}$$
C
$$2.5 \times 10^{-2} \mathrm{~J} / \mathrm{T}$$
D
$$2 \times 10^{-2} \mathrm{~J} / \mathrm{T}$$
2
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Two parallel wires of equal lengths are separated by a distance of $$3 \mathrm{~m}$$ from each other. The currents flowing through $$1^{\text {st }}$$ and $$2^{\text {nd }}$$ wire is $$3 \mathrm{~A}$$ and 4.5 A respectively in opposite directions. The resultant magnetic field at mid point between the wires $$\left(\mu_0=\right.$$ permeability of free space)

A
$$\frac{\mu_0}{2 \pi}$$
B
$$\frac{3 \mu_0}{2 \pi}$$
C
$$\frac{7 \mu_0}{2 \pi}$$
D
$$\frac{5 \mu_0}{2 \pi}$$
3
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

An electron is projected along the axis of circular conductor carrying current I. Electron will experience

A
no force.
B
a force along the axis.
C
a force at angle $$30^{\circ}$$ with the axis.
D
a force perpendicular to axis.
4
MHT CET 2023 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The magnetic field at the centre of a circular coil of radius '$$R$$', carrying current $$2 A$$ is '$$B_1$$'. The magnetic field at the centre of another coil of radius '$$3 R$$' carrying current $$4 A$$ is '$$B_2$$'. The ratio $$B_1:B_2$$ is

A
$$1: 2$$
B
$$2: 1$$
C
$$2: 3$$
D
$$3: 2$$
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