1
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
A charge q is placed at the centre of the line joining two equal charges Q. The system of the three charges will be in equilibrium if q is equal to
A
$$-$$Q/4
B
Q/4
C
$$-$$Q/2
D
Q/2
2
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
A 12 cm wire is given a shape of a right angled triangle ABC having sides 3 cm, 4 cm and 5 cm as shown in the figure. The resistance between two ends (AB, BC, CA) of the respective sides are measuread one by one ratio
NEET 2013 (Karnataka) Physics - Current Electricity Question 96 English
A
9 : 16 : 25
B
27 : 32 : 35
C
21 : 24 : 25
D
3 : 4 : 5
3
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
Ten identical cells connected in series are needed to heat a wire of length one meter and radius 'r' by 10oC in time 't'. How many cells will be required to heat the wire of length two meter of the same radius by the same temperature in time 't' ?
A
20
B
30
C
40
D
10
4
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
A bar magnet of magnetic moment M is placed at right angles to a magnetic induction B. If a force F is experienced by each pole of the magnet, the length of the magnet will be
A
MB/F
B
BF/M
C
MF/B
D
F/MB