Meter Bridge NEET Questions

Physics - Current Electricity

Meter Bridge MCQ Questions


13.
In a meter bridge, the jockey is used to:
A.
Apply EMF
B.
Heat the wire
C.
Touch the wire and locate the balance point (null point)
D.
Measure resistance directly
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ANSWER :
C. Touch the wire and locate the balance point (null point)
14.
The galvanometer in the meter bridge is connected between:
A.
Two ends of the wire
B.
In series with the cell
C.
Junction of two gaps and the jockey on the wire
D.
Two terminals of the cell
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ANSWER :
C. Junction of two gaps and the jockey on the wire
15.
If the meter bridge balance point is at 75 cm and the standard resistance in the right gap is 9 Ω, the unknown in the left gap is:
A.
9 Ω
B.
3 Ω
C.
27 Ω
D.
12 Ω
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ANSWER :
C. 27 Ω
16.
If a meter bridge balance is at 30 cm with X in the left gap and 7 Ω in the right gap, then X is:
A.
10 Ω
B.
16.33 Ω
C.
3 Ω
D.
21 Ω
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ANSWER :
C. 3 Ω
17.
End corrections in a meter bridge arise from:
A.
Resistance of the connecting wires and the metal strips at the ends of the wire
B.
EMF of the cell
C.
Resistance of the galvanometer
D.
Internal resistance of the cell
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ANSWER :
A. Resistance of the connecting wires and the metal strips at the ends of the wire
18.
End corrections in a meter bridge can be eliminated by:
A.
Increasing the length of the wire
B.
Increasing EMF
C.
Using a Carey Foster bridge with two known standard resistors interchanged
D.
Using a more sensitive galvanometer
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ANSWER :
C. Using a Carey Foster bridge with two known standard resistors interchanged