1
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
A charge Q$$\mu $$C is placed at the centre of a cube, the flux coming out from each face will be
A
$${Q \over {6{\varepsilon _0}}} \times {10^{ - 6}}$$
B
$${Q \over {6{\varepsilon _0}}} \times {10^{ - 3}}$$
C
$${Q \over {24{\varepsilon _0}}}$$
D
$${Q \over {8{\varepsilon _0}}}$$
2
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Energy per unit volume for a capacitor having area A and separation d kept at potential difference V is given by
A
$${1 \over 2}{\varepsilon _0}{{{V^2}} \over {{d^2}}}$$
B
$${1 \over {2{\varepsilon _0}}}{{{V^2}} \over {{d^2}}}$$
C
$${1 \over 2}C{V^2}$$
D
$${{{Q^2}} \over {2C}}.$$
3
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Copper and silicon is cooled from 300 K to 60 K , the specific resistance
A
decrease in copper but increase in silicon
B
increase in copper but decrease in silicon
C
increase in both
D
decrease in both
4
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
The resistance of each arm of the Wheatstone's bridge is 10 ohm. A resistance of 10 ohm is connected in series with a galvanometer then the equivalent resistance across the battery will be
A
10 ohm
B
15 ohm
C
20 ohm
D
40 ohm
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