Which of the following statements is true concerning an ideal ammeter and an ideal voltmeter?
A)both have infinite resistance
B)both have zero resistance
C)the ammeter has zero resistance,and the voltmeter has infinite resistance
D)the ammeter has infinite resistance,and the voltmeter has zero resistance
E)both have equal,finite resistances

Question

Quizplus · Accepted Answer

An ideal ammeter needs to have zero resistance so that all of the current flow in the circuit can pass through it without causing any voltage drop. On the other hand, an ideal voltmeter needs to have infinite resistance so that it draws negligible current from the circuit, and it only measures the voltage across the component it is connected to without affecting the circuit operation. Therefore, the correct choice is C, where the ammeter has zero resistance and the voltmeter has infinite resistance.

Which of the Following Statements Is True Concerning an Ideal