1
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
$${1 \over {{{\left( {2x - a} \right)}^2}}}$$
2
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
A wire carrying current $$I$$ has the shape shown in adjoining figure.

AIPMT 2015 Cancelled Paper Physics - Moving Charges and Magnetism Question 63 English
Linear parts of the wire are very long and parallel to X-axis while semicircular protion of radius R is lying in Y-Z plane. Magtnetic field at pont $$O$$ is
A
$$\overrightarrow B = - {{{\mu _0}I} \over {4\pi R}}\left( {\pi \widehat i + 2\widehat k} \right)$$
B
$$\overrightarrow B = {{{\mu _0}I} \over {4\pi R}}\left( {\pi \widehat i - 2\widehat k} \right)$$
C
$$\overrightarrow B = {{{\mu _0}I} \over {4\pi R}}\left( {\pi \widehat i + 2\widehat k} \right)$$
D
$$\overrightarrow B = - {{{\mu _0}I} \over {4\pi R}}\left( {\pi \widehat i - 2\widehat k} \right)$$
3
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
A resistance 'R' draws power 'P' when connected to an AC source. If an inductance is now placed in series with the resistance, such that the impedance of the circuit becomes 'Z'. the power drawn will be
A
$$P\left( {{R \over Z}} \right)$$
B
P
C
$$P{\left( {{R \over Z}} \right)^2}$$
D
$$P\sqrt {{R \over Z}} $$
4
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
A radiation of energy 'E' falls normally on a perfectly reflecting surface. The momentum transferred to the surface is (C = Velocity of light)
A
$${{2E} \over {{C^2}}}$$
B
$${E \over {{C^2}}}$$
C
$${E \over C}$$
D
$${{2E} \over C}$$
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