1
MHT CET 2023 9th May Morning Shift
+1
-0

A conducting wire of length $$2500 \mathrm{~m}$$ is kept in east-west direction, at a height of $$10 \mathrm{~m}$$ from the ground. If it falls freely on the ground then the current induced in the wire is (Resistance of wire $$=25 \sqrt{2} \Omega$$, acceleration due to gravity $$\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2, \mathrm{~B}_{\mathrm{H}}=2 \times 10^{-5} \mathrm{~T}$$ )

A
$$0.2 \mathrm{~A}$$
B
$$0.02 \mathrm{~A}$$
C
$$0.01 \mathrm{~A}$$
D
$$2 \mathrm{~A}$$
2
MHT CET 2023 9th May Morning Shift
+1
-0

Self inductance of solenoid is

A
directly proportional to current flowing through the coil.
B
directly proportional to the length.
C
directly proportional to its area of cross-section.
D
inversely proportional to the area of cross-section.
3
MHT CET 2021 21th September Morning Shift
+1
-0

The magnetic potential energy stored in a certain inductor is $$25 \mathrm{~mJ}$$, when the current in the inductor is $$50 \mathrm{~mA}$$. This inductor is of inductance

A
2.00 H
B
0.20 H
C
200 H
D
20 H
4
MHT CET 2021 21th September Morning Shift
+1
-0

A wire of length '$$L$$'; having resistance '$$R$$' falls from a height '$$\ell$$' in earth's horizontal magnetic field '$$B$$'. The current through the wire is ( $$\mathrm{g}=$$ acceleration due to gravity)

A
$$\frac{\mathrm{BL} \sqrt{2 \mathrm{~g} \ell}}{\mathrm{R}}$$
B
$$\frac{\mathrm{BL} \sqrt{2 \mathrm{~g} \ell}}{\mathrm{R}^2}$$
C
$$\frac{2 \mathrm{BLg} \ell}{\mathrm{R}^2}$$
D
$$\frac{\mathrm{B}^2 \mathrm{~L}^2}{\mathrm{R}}$$
MHT CET Subjects
Physics
Mechanics
Optics
Electromagnetism
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Calculus
Coordinate Geometry
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