1
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Two cells, having the same e.m.f. are connected in series through an external resistance R. Cells have internal resistances r1 and r2 (r1 > r2) respectively. When the circuit is closed, the potential difference across the first cell is zero. The value of R is
A
r1 + r2
B
r1 $$-$$ r2
C
$${{{r_1} + {r_2}} \over 2}$$
D
$${{{r_1} - {r_2}} \over 2}$$
2
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Kirchoff's first and second laws of electrical circuits are consequences of
A
conservation of energy and electric charge respectively
B
conservation of energy
C
conservation of electric charhge and energy respectively
D
conservation of electric charge.
3
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
In the circuit shown, if a conducting wire is connected between points A and B, the current in this wire will

AIPMT 2006 Physics - Current Electricity Question 65 English
A
flow from B to A
B
flow from A to B
C
flow in the direction which will be decided by the value of V be zero.
D
be zero
4
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
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