1
AIPMT 2010 Prelims
+4
-1
A galvanometer has a coil of resistance 100 ohm and gives a full scale deflection for 30 mA current. If it is to work as a voltmeter of 30 volt range, the resistance required to be added will be
A
900 $$\Omega$$
B
1800 $$\Omega$$
C
500 $$\Omega$$
D
1000 $$\Omega$$
2
AIPMT 2010 Prelims
+4
-1
A galvanometer has a coil of resistance 100 ohm and gives a full scale deflection for 30 mA current. If it is to work as a voltmeter of 30 volt range, the resistance required to be added will be
A
900 $$\Omega$$
B
1800 $$\Omega$$
C
500 $$\Omega$$
D
1000 $$\Omega$$
3
AIPMT 2010 Prelims
+4
-1
A square current carrying loop is suspended in a uniform magnetic field acting in the plane of the loop. If the force on one arm of the loop is the net force on the remaining three arms of the loop is
A
$$3\overrightarrow F$$
B
$$-$$ $$\overrightarrow F$$
C
$$-$$ $$3\overrightarrow F$$
D
$$\overrightarrow F$$
4
AIPMT 2009
+4
-1
The magnetic force acting on a charged particle of charge $$-$$2 $$\mu$$C in a magnetic frield of 2 T acting in y direction, when the particle velocity is $$\left( {2\widehat i + 3\widehat j} \right) \times {10^6}\,m{s^{ - 1}}$$
A
4 N in z direction
B
8 N in y direction
C
8 N in z direction
D
8 N in $$-$$ z direction
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