iCON Education - Moving Charges and Magnetism AIIMS Test

Question 1: Palette 1/13

AIIMS 2019 MCQ

A proton is projected with velocity $\mathbf{v}=2 \hat{\mathbf{i}}$ in a region where magnetic field $\mathbf{B}=(\hat{\mathbf{i}}+3 \hat{\mathbf{j}}+4 \hat{\mathbf{k}}) \mu \mathrm{T}$ and electric field $\mathbf{E}=10 \hat{\mathbf{i}} \mu \mathrm{V} / \mathrm{m}$. Then find out the net acceleration of proton

$1400 \mathrm{~m} / \mathrm{s}^2$

$700 \mathrm{~m} / \mathrm{s}^2$

$1000 \mathrm{~m} / \mathrm{s}^2$

$800 \mathrm{~m} / \mathrm{s}^2$

Question 2: Palette 2/13

AIIMS 2019 MCQ

In figure, two parallel infinitely long current carrying wires are shown. If resultant magnetic field at point $A$ is zero. Then determine the value of current $I$.

AIIMS 2019 Physics - Moving Charges and Magnetism Question 12 English

50 A

15 A

30 A

25 A

Question 3: Palette 3/13

AIIMS 2019 MCQ

Two circular loops having same radius $(R=10 \mathrm{~cm})$ and same current $\frac{7}{2} \mathrm{~A}$ are placed along same axis as shown. If distance between their centres is $10 \mathrm{~cm}$, find net magnetic field at point $P$.

AIIMS 2019 Physics - Moving Charges and Magnetism Question 8 English

$\frac{50 \mu_0}{\sqrt{5}} \mathrm{~T}$

$\frac{28 \mu_0}{\sqrt{5}} \mathrm{~T}$

$\frac{56 \mu_0}{\sqrt{5}} \mathrm{~T}$

$\frac{56 \mu_0}{\sqrt{3}} \mathrm{~T}$

Question 4: Palette 4/13

AIIMS 2019 MCQ

If two protons are moving with speed $v=4.5 \times 10^5 \mathrm{~m} / \mathrm{s}$ parallel to each other then find the ratio of electrostatic and magnetic force between them

$4.4 \times 10^5$

$2.2 \times 10^5$

$3.3 \times 10^5$

$1.1 \times 10^5$

Question 5: Palette 5/13

AIIMS 2019 MCQ

Assertion : Electron moving perpendicular to B will perform circular motion.

Reason : Force by magnetic field is perpendicular to velocity.

If both assertion and reason are true and reason is the correct explanation of assertion.

If both assertion and reason are true, but reason is not the correct explanation of assertion.

If assertion is true, but reason is false.

If both assertion and reason are false.

Question 6: Palette 6/13

AIIMS 2019 MCQ

Assertion : A charge particle is released from rest in magnetic field then it will move in a circular path.

Reason : Work done by magnetic field is non zero.

If both assertion and reason are true and reason is the correct explanation of assertion.

If both assertion and reason are true, but reason is not the correct explanation of assertion.

If assertion is true, but reason is false.

If both assertion and reason are false.

Question 7: Palette 7/13

AIIMS 2018 MCQ

A long straight wire, carrying current $I$ is bent at its mid-point to form an angle of $45^{\circ}$. Induction of magnetic field (in tesla) at point $P$, distant $R$ from point of bending is equal to

AIIMS 2018 Physics - Moving Charges and Magnetism Question 1 English

$\frac{(\sqrt{2}-1) \mu_0 I}{4 \pi R}$

$\frac{(\sqrt{2}+1) \mu_0 I}{4 \pi R}$

$\frac{(\sqrt{2}-1) \mu_0 I}{4 \sqrt{2} \pi R}$

$\frac{(\sqrt{2}+1) \mu_0 I}{4 \sqrt{2} \pi R}$

Question 8: Palette 8/13

AIIMS 2018 MCQ

An element $d l=d x \hat{\mathbf{i}}$ (where, $d x=1 \mathrm{~cm}$ ) is placed at the origin and carries a large current $i=10 \mathrm{~A}$. What is the magnetic field on the $Y$-axis at a distance of $0.5 \mathrm{~m}$ ?

$2 \times 10^{-8} \hat{\mathbf{k}} T$

$4 \times 10^{-8} \hat{\mathbf{k}} \mathbf{T}$

$-2 \times 10^{-8} \hat{\mathbf{k}} T$

$-4 \times 10^{-8} \hat{\mathbf{k}} T$

Question 9: Palette 9/13

AIIMS 2018 MCQ

Consider the following figure, a uniform magnetic field of 0.2 T is directed along the positive X-axis. The magnetic flux through top surface of the figure.

AIIMS 2018 Physics - Moving Charges and Magnetism Question 7 English

zero

0.8 m-Wb

1.0 m-Wb

$-$1.8 m-Wb

Question 10: Palette 10/13

AIIMS 2018 MCQ

Assertion A magnetic field interacts with a moving charge and not with a stationary charge.

Reason A moving charge produce a magnetic field.

Both Assertion and Reason are correct, Reason is the correct explanation of Assertion

Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion

Assertion is correct and Reason is incorrect

Assertion is incorrect and Reason is correct

Question 11: Palette 11/13

AIIMS 2017 MCQ

A long wire having a semicircular loop of radius r carries a current i as shown in figure. The magnetic induction at the centre O due to entire

AIIMS 2017 Physics - Moving Charges and Magnetism Question 3 English

$\frac{\mu_0 i}{4 r}$

$\frac{\mu_0 i^2}{4 r}$

$\frac{\mu_0 i}{4 r^2}$

None of these

Question 12: Palette 12/13

AIIMS 2017 MCQ

A conductor lies along the z-axis at $-1.5 \leq Z \leq 1.5 \mathrm{~m}$ and carries a fixed current of 10.0 $\mathrm{A}$ in $-a_z$ direction as shown in figure for a field $B=3 \times 10^{-4} e^{-0.2 x} a_y \mathrm{~T}$, the total power required to move the conductor at constant speed to $x=2.0 \mathrm{~m}, y=0 \mathrm{~m}$ in $5 \times 10^{-3} \mathrm{~s}$ is (Assume parallel motion along the $x$-axis)

AIIMS 2017 Physics - Moving Charges and Magnetism Question 6 English

1.57 W

2.97 W

4.45 W

9.87 W

Question 13: Palette 13/13

AIIMS 2017 MCQ

Assertion : Cyclotron does not accelerate electron.

Reason : Mass of the electron is very small.

Both assertion and reason are true and reason is the correct explanation of assertion

Both assertion and reason are true but reason is not the correct explanation of assertion

Assertion is true but reason is false

Both assertion and reason are false.