1
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

A metal conductor of length $$1 \mathrm{~m}$$ rotates vertically about one of its ends at an angular velocity of $$5 \mathrm{~rad} / \mathrm{s}$$. If horizontal component of earth's magnetic field is $$0.2 \times 10^{-4} \mathrm{~T}$$, then the e.m.f. developed between the two ends of the conductor is

A
$$5 ~\mu \mathrm{V}$$
B
$$50 \mathrm{~mV}$$
C
$$5 \mathrm{~mV}$$
D
$$50 ~\mu \mathrm{V}$$
2
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two wires carrying currents $$5 \mathrm{~A}$$ and $$2 \mathrm{~A}$$ are enclosed in a circular loop as shown in the figure. Another wire carrying a current of $$3 \mathrm{~A}$$ is situated outside the loop. The value of $$\oint \overrightarrow{\mathrm{B}} \overrightarrow{\mathrm{d} l}$$ around the loop is ( $$\mu_0=$$ permeability of free space, $$\overrightarrow{\mathrm{d} l}$$ is the length of the element on the Amperion loop)

MHT CET 2021 20th September Evening Shift Physics - Moving Charges and Magnetism Question 105 English

A
$$4 \mu_0$$
B
$$2 \mu_0$$
C
$$3 \mu_0$$
D
$$\mu_0$$
3
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The magnetic field at the centre of a current carrying circular coil of area 'A' is 'B'. The magnetic moment of the coil is ( $$\mu_0=$$ permeability of free space)

A
$$\frac{2 \mathrm{BA}^{3 / 2}}{\mu_0 \sqrt{\pi}}$$
B
$$\frac{\mathrm{BA}^{3 / 2}}{\mu_0 \pi}$$
C
$$\frac{\mu_0 \sqrt{\pi}}{2 \mathrm{BA}^2}$$
D
$$\frac{2 \mathrm{BA}^2}{\mu_0 \sqrt{\pi}}$$
4
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The relation between magnetic moment 'M' of revolving electron and principle quantum number 'n' is

A
$$\mathrm{M} \propto \frac{1}{n}$$
B
$$M \propto n$$
C
$$M \propto n^2$$
D
$$M \propto \mathrm{n}^3$$
MHT CET Subjects
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12