1. The Wheatstone bridge is primarily used for:
A) Measuring high voltage
B) Measuring low resistance precisely
C) Measuring magnetic field
D) Measuring current directly
2. In low resistance measurement using a Wheatstone bridge, the major source of error is due to:
A) Galvanometer sensitivity
B) Resistance of leads and contacts
C) Battery voltage
D) Temperature of surroundings
3. For very high resistance measurements, Wheatstone bridge becomes inaccurate because:
A) The battery gets discharged
B) The galvanometer becomes insensitive
C) Current becomes too high
D) Resistance becomes zero
4. Resistance change due to heating effect of current is a:
A) Benefit of Wheatstone bridge
B) Limitation of Wheatstone bridge
C) Principle of Wheatstone bridge
D) Law of resistance
5.Excessive current through the resistance may cause:
A) No effect
B) Permanent change in resistance value
C) Increase galvanometer sensitivity
D) Zero current flow
6.Which instrument detects imbalance in a Wheatstone bridge?
A) Ammeter
B) Voltmeter
C) Galvanometer
D) Potentiometer
7.The Wheatstone bridge is most accurate when the bridge is:
A) Unbalanced
B) Balanced
C) Open
D) Short-circuited
8. The heating effect in Wheatstone bridge may cause errors because it changes:
A) Galvanometer reading only
B) Battery emf
C) Resistance value
D) Wire length
9. Wheatstone bridge with sensors is widely used in:
A) Instrumentation
B) Communication only
C) Nuclear reactions
D) Astronomy only
→ Explain the following
A) Ammeter
B) Voltmeter
C) Galvanometer
D) Potentiometer
A) Ammeter
B) Voltmeter
C) Galvanometer
D) Potentiometer
