1
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
A, B and C are voltmeters of resistance R, 1.5 R and 3R respectively as shown in the figure. When some potential difference is applied between X and Y, the voltmeter readings are VA, VB and VC respectively, Then

AIPMT 2015 Cancelled Paper Physics - Current Electricity Question 91 English
A
VA = VB $$ \ne $$ VC
B
VA $$ \ne $$ VB $$ \ne $$ VC
C
VA = VB = VC
D
VA $$ \ne $$ VB = VC
2
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
A potentiometer wire has length 4 m and resistance 8 $$\Omega $$. The resistance that must be connected in series with the wire and an accumulator of e.m.f. 2 V, so as to get a potential gradient 1 mV per cm on the wire is
A
44 $$\Omega $$
B
48 $$\Omega $$
C
32 $$\Omega $$
D
40 $$\Omega $$
3
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
The resistances in the two arms of the meter bridge are 5 $$\Omega $$ and R$$\Omega $$ respectively. When the resistance R is shunted with an equal resistance, the new balance point is at 1.6$$l$$1. The resistance R is

AIPMT 2014 Physics - Current Electricity Question 88 English
A
10 $$\Omega $$
B
15 $$\Omega $$
C
20 $$\Omega $$
D
25 $$\Omega $$
4
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
A potentiometer circuit has been set up for finding the internal resistance of a given cell. The main battery, used across the potentiometer wire, has an emf of 2.0 V and a negligible internal resistance. The potentiometer wire itself is 4 m long. When the resistance R, connected across the given cell, has values of (i) infinity,    (ii) 9.5 $$\Omega $$
the balancing lengths on the potentiometer wire are found to be 3 m and 2.85 m, respectively. The value of internal resistance of the cell is
A
0.25 $$\Omega $$
B
0.95 $$\Omega $$
C
0.5 $$\Omega $$
D
0.75 $$\Omega $$
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