1
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
A square loop ABCD carrying a current $$i$$, is placed near and coplanar with a long straight conductor XY carrying a current $$I$$, the net force on the loop will be NEET 2016 Phase 1 Physics - Moving Charges and Magnetism Question 66 English
A
$${{2{\mu _0}liL} \over {3\pi }}$$
B
$${{{\mu _0}liL} \over {2\pi }}$$
C
$${{2{\mu _0}li} \over {3\pi }}$$
D
$${{{\mu _0}li} \over {2\pi }}$$
2
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
A proton and an alpha particle both enter a region of uniform magnetic field B, moving at right angles to the field B. If the radius of circular orbits for both the particles is equal and the kinetic energy acquired by proton is 1 MeV, the energy acquired by the alpha particle will be
A
1.5 MeV
B
1 MeV
C
4 MeV
D
0.5 MeV
3
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
An electron moving in a circular orbit of radius r makes n rotations per second. The magnetic field produced at the centre has magnitude
A
$${{{\mu _0}{n^2}e} \over r}$$
B
$${{{\mu _0}ne} \over {2r}}$$
C
$${{{\mu _0}ne} \over {2\pi r}}$$
D
Zero
4
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
A conducting square frame of side 'a' and a long straight wire carrying current $$I$$ are located in the same plane as shown in the figure. The frame moves to the right with a constant velocity 'V'. The emf induced in the frame will be proportional to

AIPMT 2015 Cancelled Paper Physics - Moving Charges and Magnetism Question 62 English
A
$${1 \over {{{\left( {2x + a} \right)}^2}}}$$
B
$${1 \over {\left( {2x - a} \right)\left( {2x + a} \right)}}$$
C
$${1 \over {{x^2}}}$$
D
$${1 \over {{{\left( {2x - a} \right)}^2}}}$$
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