1
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+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
MCQ (Single Correct Answer)
+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
MCQ (Single Correct Answer)
+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 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
Electromagnets are made of soft iron because soft iron has
A
low retentivity and high coercive force
B
high retentivity and high coercive force
C
low retentivity and low coercive force
D
high retentivity and low coercive force
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