1
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
2
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.
3
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
4
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
The net resistance of the circuit between A and B is

AIPMT 2000 Physics - Current Electricity Question 42 English
A
$${8 \over 3}\Omega $$
B
$${14 \over 3}\Omega $$
C
$${{16} \over 3}\Omega $$
D
$${{22} \over 3}\Omega $$
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