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NEET UG PHYSICS MCQ: MAGNETIC EFFECT OF CURRENT

1 Hard

1 of 1

Application +4 | -1

There exists a uniform and constant magnetic field

B=1.67 T

along positive

z

-axis. Simultaneously a proton and an alpha particle are projected from the origin with same speed

v=4 \sqrt{5} \times 10^5 \mathrm{~ms}^{-1}

along positive and negative

x

-axis respectively. Find the separation between them when their velocities become mutually perpendicular for the first time. Ignore the force of interaction between them as well as any force other than magnetic force. Mass of the proton is

1.67 \times 10^{-27} \mathrm{~kg}

.

View answer and explanation

Correct option: B

25 \mathrm{~mm}

Option B (

25 \mathrm{~mm}

) is correct because it's the calculated separation between the proton and alpha particle when their velocities become mutually perpendicular for the first time, based on their cyclotron radii and periods.

More Questions from MAGNETIC EFFECT OF CURRENT

Practice All Chapter MCQs →

Which of the following statements is not true A current loop in a magnetic field Given below are two statements:
Statement (I): When currents vary with time, Newton’s third law is valid only if momentum carried by the electromagnetic field is taken into account.
Statement (II): Ampere's circuital law does not depend on Biot-Savart’s law.
In the light of the above statements, choose the correct answer from the options given below: The magnetic field due to current carrying a circular loop of radius

5 \mathrm{~cm}

at a point on the axis at a distance of

12 \mathrm{~cm}

from the center is

250 \mu \mathrm{T}

. The magnetic field at the center of the loop is The magnetic field

d \vec{B}

due to a small current element

d \vec{l}

\vec{r}

and element carrying current

i

is Three long straight conductors carry currents 4A, 2A and 3A into the plane of paper. A circular path is imagined to be enclosing these currents. The value of

\oint {\overrightarrow B .\overrightarrow {dl} }