1
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
2
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
If specific resistance of a potentiometer wire is 10-7$$\Omega$$ m and current flow through it is 0.1 amp., cross-sectional area of wire is 10$$-$$6 m2 then potential gradient will be
A
10$$-$$2 volt/m
B
10$$-$$4 volt/m
C
10$$-$$6 volt/m
D
10$$-$$8 volt/m.
3
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
Two bulbs of (40 W, 200 V), and (100 W, 200 V). Then correct relation for their resistances
A
R40 < R100
B
R40 > R100
C
R40 = R100
D
no relation can be predicted.
4
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
The net resistance of the circuit between A and B is

A
$${8 \over 3}\Omega$$
B
$${14 \over 3}\Omega$$
C
$${{16} \over 3}\Omega$$
D
$${{22} \over 3}\Omega$$
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