1
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
In a Wheatstone's bridge all the four arms have equal resistance R. If the resistance of the galvanometer arm is also R, the equivalent resistance of the combination as seen by the battery is
A
R/4
B
R/2
C
R
D
2R
2
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Fuse wire is a wire of
A
high resistance and high melting point
B
high resistance and low melting point
C
low resistance and low melting point
D
low resistance and high melting point
3
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Two 220 volt, 100 watt bulbs are connected first in series and then in parallel. Each time the combination is connected to a 220 volt a.c. supply line. The power drawn by the combination in each case respectively will be
A
50 watt, 100 watt
B
100 watt, 50 watt
C
200 watt, 150 watt
D
50 watt, 200 watt
4
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
Specific resistance of a conductor increases with
A
increase in temperature
B
increase in cross-section area
C
increase in cross-section and decrease in length
D
decrease in cross secton area.
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