Meter Bridge NEET Questions

Physics - Current Electricity

Meter Bridge MCQ Questions


7.
If 5 Ω in left gap and unknown X in right gap give balance at 40 cm from left end, then X equals:
A.
5 Ω
B.
7.5 Ω
C.
12.5 Ω
D.
10/3 Ω
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ANSWER :
B. 7.5 Ω
8.
When the resistors in the two gaps of a meter bridge are interchanged, the new balance length (from the same end) is:
A.
(100 − L) cm
B.
2L cm
C.
L cm
D.
L/2 cm
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ANSWER :
A. (100 − L) cm
9.
If the balance point is at 50 cm in a meter bridge, the resistors in the two gaps are:
A.
One is infinite
B.
Equal
C.
Different
D.
One is zero
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ANSWER :
B. Equal
10.
In a meter bridge, the most accurate balance is obtained when the balance point lies:
A.
At any random point
B.
Only at exactly 50 cm
C.
In the middle of the wire (around 50 cm)
D.
Near 0 cm or 100 cm (at the ends)
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ANSWER :
C. In the middle of the wire (around 50 cm)
11.
To make the balance point lie near the middle of the meter bridge wire, the standard resistance R should be chosen:
A.
Much greater than X
B.
Equal to galvanometer resistance
C.
Approximately equal to X (the unknown)
D.
Much smaller than X
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ANSWER :
C. Approximately equal to X (the unknown)
12.
In the meter bridge, the slide wire is stretched on a:
A.
Glass tube
B.
Wooden board (with metallic strips at junctions)
C.
Plastic strip
D.
Iron rod
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ANSWER :
B. Wooden board (with metallic strips at junctions)