1
NEET 2013
MCQ (Single Correct Answer)
+4
-1
A wire of resistance 4 $$\Omega $$ is stretched to twice its original length. The resistance of stretched wire would be
A
8 $$\Omega $$
B
16 $$\Omega $$
C
2 $$\Omega $$
D
4 $$\Omega $$
2
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
A cell having an emf $$\varepsilon $$ and internal resistance r is connected across a variable external resistance R. As the resistance R is increased, the plot of potential difference V across R is given by
A
AIPMT 2012 Mains Physics - Current Electricity Question 76 English Option 1
B
AIPMT 2012 Mains Physics - Current Electricity Question 76 English Option 2
C
AIPMT 2012 Mains Physics - Current Electricity Question 76 English Option 3
D
AIPMT 2012 Mains Physics - Current Electricity Question 76 English Option 4
3
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
The power dissipated in the circuit shown in the figure is 30 watts. The value of R is
AIPMT 2012 Mains Physics - Current Electricity Question 75 English
A
20 $$\Omega $$
B
15 $$\Omega $$
C
10 $$\Omega $$
D
30 $$\Omega $$
4
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
In the circuit shown the cells A and B have negligible resistances. For VA = 12 V, R1 = 500 $$\Omega $$ and R = 100 $$\Omega $$ the galvanometer (G) shows no deflection. The value of Vs is

AIPMT 2012 Prelims Physics - Current Electricity Question 79 English
A
4 V
B
2 V
C
12 V
D
6 V
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