The voltmeter, ammeter and the two resistors in the circuit have been checked and found correct. On inserting the key in the plug the voltmeter reads 3.0 V but the ammeter reads 150 mA. This could most likely be because the connecting wires joining the
A. ammeter are loose
B. 15 Ω resistor are loose
C. 20 Ω resistor are loose
D. voltmeter are loose.
Answer:B
The voltmeter, ammeter and the two resistors in the circuit have been checked and found correct. On inserting the key in the plug the voltmeter reads 3.0 V but the ammeter reads 150 mA. This could most likely be because the connecting wires joining the
A. ammeter are loose B. 15 Ω resistor are loose C. 20 Ω resistor are loose D. voltmeter are loose.
Explanation: The 15 ohm resistor is in parallel connection and with loose connections, the current may not flow through it.