To measure the p.d. between two ends of a resistor in a circuit, it is essential that the resistance of the voltmeter be very large compared to_______
A. other resistances in the circuit
B. the combined resistance of all the resistors in the circuit
C. the largest resistance in the circuit
D. the resistance of the resistor across which the meter is connected.
Answer:D
To measure the p.d. between two ends of a resistor in a circuit, it is essential that the resistance of the voltmeter be very large compared to_______
A. other resistances in the circuit B. the combined resistance of all the resistors in the circuit C. the largest resistance in the circuit D. the resistance of the resistor across which the meter is connected.