1
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
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 103 English
A
10 $$\Omega $$
B
15 $$\Omega $$
C
20 $$\Omega $$
D
25 $$\Omega $$
2
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
In an ammeter 0.2% of main current passes through the galvanometer. If resistance of galvanometer is G, the resistance of ammeter will be
A
$${1 \over {499}}G$$
B
$${{499} \over {500}}G$$
C
$${1 \over {500}}G$$
D
$${{500} \over {499}}G$$
3
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
Following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole moment $$\overrightarrow m .$$ Which configuration has highest net magnetic dipole moment ?

AIPMT 2014 Physics - Magnetism and Matter Question 42 English
A
(1)
B
(2)
C
(3)
D
(4)
4
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
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 $$\Omega $$