The voltmeter, ammeter and resistance in the circuit shown below have been checked to be correct. On plugging the key, the ammeter reads 0.9 A, but the voltmeter reads zero. This could be because.
A. The range of the voltmeter is more than twice the battery voltage.
B. The least count of the voltmeter is too high.
C. The wires joined to the voltmeter terminals are loose.
D. The voltmeter is incorrectly placed in the circuit.
Answer:C
The voltmeter, ammeter and resistance in the circuit shown below have been checked to be correct. On plugging the key, the ammeter reads 0.9 A, but the voltmeter reads zero. This could be because.
A. The range of the voltmeter is more than twice the battery voltage. B. The least count of the voltmeter is too high. C. The wires joined to the voltmeter terminals are loose. D. The voltmeter is incorrectly placed in the circuit.
Explanation: The circuit components are rightly arranged but if wires are loosely connected, the problem arises.