JEE Main 2024 (Online) 5th April Morning Shift | Electromagnetic Induction Question 4 | Physics

JEE Main 2024 (Online) 5th April Morning Shift

MCQ (Single Correct Answer)

-1

Two conducting circular loops A and B are placed in the same plane with their centres coinciding as shown in figure. The mutual inductance between them is:

JEE Main 2024 (Online) 5th April Morning Shift Physics - Electromagnetic Induction Question 3 English

$$\frac{\mu_o}{2 \pi} \cdot \frac{b^2}{a}$$

$$\frac{\mu_{\mathrm{o}} \pi \mathrm{a}^2}{2 \mathrm{~b}}$$

$$\frac{\mu_0 \pi b^2}{2 a}$$

$$\frac{\mu_0}{2 \pi} \cdot \frac{a^2}{b}$$

JEE Main 2024 (Online) 1st February Evening Shift

MCQ (Single Correct Answer)

-1

A transformer has an efficiency of $80 \%$ and works at $10 \mathrm{~V}$ and $4 \mathrm{~kW}$. If the secondary voltage is $240 \mathrm{~V}$, then the current in the secondary coil is :

$1.33 \mathrm{~A}$

$13.33 \mathrm{~A}$

$1.59 \mathrm{~A}$

$15.1 \mathrm{~A}$

JEE Main 2024 (Online) 31st January Morning Shift

MCQ (Single Correct Answer)

-1

A coil is places perpendicular to a magnetic field of $$5000 \mathrm{~T}$$. When the field is changed to $$3000 \mathrm{~T}$$ in $$2 \mathrm{~s}$$, an induced emf of $$22 \mathrm{~V}$$ is produced in the coil. If the diameter of the coil is $$0.02 \mathrm{~m}$$, then the number of turns in the coil is:

140

JEE Main 2024 (Online) 30th January Evening Shift

MCQ (Single Correct Answer)

-1

Match List I with List II

	List I		List II
(A)	Gauss's law of magnetostatics	(I)	$$\oint \vec{E} \cdot \vec{d} a=\frac{1}{\varepsilon_0} \int \rho d V$$
(B)	Faraday's law of electro magnetic induction	(II)	$$\oint \vec{B} \cdot \vec{d} a=0$$
(C)	Ampere's law	(III)	$$\int \vec{E} \cdot \vec{d} l=\frac{-d}{d t} \int \vec{B} \cdot \vec{d} a$$
(D)	Gauss's law of electrostatics	(IV)	$$\oint \vec{B} \cdot \vec{d} l=\mu_0 I$$

Choose the correct answer from the options given below:

A-III, B-IV, C-I, D-II

A-IV, B-II, C-III, D-I

A-II, B-III, C-IV, D-I

A-I, B-III, C-IV, D-II

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