1
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Two batteries, one of emf 18 volts and internal resistance 2 $$\Omega $$ and the other of emf 12 volts and internal resistance 1 $$\Omega $$, are connected as shown. The voltmeter V will record a reading of

AIPMT 2005 Physics - Current Electricity Question 64 English
A
30 volt
B
18 volt
C
15 volt
D
14 volt
2
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
A 5-ampere fuse wire can withstand a maximum power of 1 watt in the circuit. The resistance of the fuse wire is
A
0.04 ohm
B
0.2 ohm
C
5 ohm
D
0.4 ohm
3
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
When a wire of uniform cross-section $$a$$ length $$l$$ and resistance R is bent into a complete circle. resistance between any two of diametrically opposite points will be
A
R/4
B
4R
C
R/8
D
R/2
4
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
The electric resistance of a certain wire of iron is R. If its length and radius are both doubled, then
A
The resistance will be doubled and the specific resistance will be halved.
B
The resistance will be halved and the specific resistance will remain unchanged.
C
The resistance will be halved and the specific resistance will be doubled.
D
The resistance and the specific resistance, will both remain unchanged.
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