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 series combination of n1 capacitors, each of value C1, is charged by a source of potential difference 4V. When another parallel combination of n2 capacitors, each of value C2, is charged by a source of potential difference V, it has the same (total) energy stored in it. as the first combination has. The value of C2. in terms of C1, is then
A
$${{2{C_1}} \over {{n_1}{n_2}}}$$
B
$$16{{{n_2}} \over {{n_1}}}{C_1}$$
C
$$2{{{n_2}} \over {{n_1}}}{C_1}$$
D
$${{16{C_1}} \over {{n_1}{n_2}}}$$
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
A conducting circular loop is placed in a uniform magnetic field, B = 0.025 T with its plane perpendicular to the loop. The radius of the loop is made to shrink at a constant rate of 1 mm s$$-$$1. The induced emf when the radius is 2 cm, is
A
$$2\pi \mu V$$
B
$$\pi \mu V$$
C
$${\pi \over 2}\mu V$$
D
2$$\mu $$$$V$$