Question

question 4 of 25
how would you measure the potential difference across a resistor?
a. connect an ammeter in parallel with the resistor
b. connect a voltmeter in parallel with the resistor
c. connect a voltmeter in series with the resistor
d. connect an ammeter in series with the resistor

Explanation:

• An ammeter is used to measure current and is connected in series. So options A and D are incorrect.
• A voltmeter is used to measure potential difference. For a voltmeter, it should be connected in parallel across the component (here, the resistor) to measure the potential difference across it. If connected in series (as in option C), it would disrupt the circuit as it has a very high resistance.

Answer:

B. Connect a voltmeter in parallel with the resistor