1
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
A car battery of emf 12 V and internal resistance $$5 \times {10^{ - 2}}$$ $$\Omega $$., receives a current of 60 amp, from external source, then terminal potential difference of battery is
A
12 V
B
9 V
C
15 V
D
20 V
2
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.
3
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
The potentiometer is best for measuring voltage, as
A
it has a sensitive galvanometer and gives null deflection
B
it has wire of high resistance
C
it measures p.d. in closed circuit
D
it measures p.d in open circuit.
4
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
The magnetic field at centre, P will be

AIPMT 2000 Physics - Moving Charges and Magnetism Question 21 English
A
$${{{\mu _0}} \over {4\pi }}$$
B
$${{{\mu _0}} \over {\pi }}$$
C
$${{{\mu _0}} \over {2\pi }}$$
D
$$4{\mu _0}\pi $$
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