1
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
A long straight wire carries a certain current and produces a magnetic field 2 $$ \times $$ 10$$-$$4 Wb m$$-$$2 at a perpendicular distance of 5 cm from the wire. An electron situated at 5 cm from the wire moves with a velocity 107 m/s towards the wire along perpendicular to it. The force experienced by the electron will be (charge on electron 1.6 $$ \times $$ 10$$-$$19 C)
A
3.2 N
B
3.2 $$ \times $$ 10$$-$$16 N
C
1.6 $$ \times $$ 10$$-$$16 N
D
zero
2
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
A circular coil ABCD carrying a current 'i' is placed in a uniform magnetic field. If the magnetic force on the segment AB is $$\overrightarrow F $$, the force on the remaining segment BCDA is

NEET 2013 (Karnataka) Physics - Moving Charges and Magnetism Question 59 English
A
$$ - \overrightarrow F $$
B
$$3\overrightarrow F $$
C
$$-$$$$3\overrightarrow F $$
D
$$\overrightarrow F $$
3
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
A bar magnet of magnetic moment M is placed at right angles to a magnetic induction B. If a force F is experienced by each pole of the magnet, the length of the magnet will be
A
MB/F
B
BF/M
C
MF/B
D
F/MB
4
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
The primary of a transformer when connected to a dc battery of 10 Volt draws a current of 1 mA. The number of turns of the primary and secondary windings are 50 and 100 respectively. The voltage in the secondary and the current drawn by the circuit in the secondary are respectively
A
20 V and 2.0 mA
B
10 V and 0.5 mA
C
Zero volt and therefore no current
D
20 V and 0.5 mA
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