Concepts Of Physics MCQ Edition [Volume 2]
- Exam
- Concepts Of Physics MCQ Edition [Volume 2]
- Subject
- Physics
- Chapter
- Electric Current in Conductors
Concepts Of Physics MCQ Edition [Volume 2] · Physics · Electric Current in Conductors
Select the correct statements.
Select the correct statements.
Options
- AA voltmeter should possess a small resistance.
- BA voltmeter should possess a large resistance.
- CAn ammeter should possess a small resistance.
- DAn ammeter should possess a large resistance.
Correct answer
C. An ammeter should possess a small resistance.
Step-by-step solution
A voltmeter is connected in parallel with the circuit element across which the potential difference is to be measured. To ensure that it draws negligible current and does not alter the actual potential difference, a voltmeter should possess a very large resistance.
An ammeter is connected in series with the circuit to measure the current. To ensure that its inclusion does not significantly increase the total resistance of the circuit and alter the current being measured, an ammeter should possess a very small resistance.
An ammeter is connected in series with the circuit to measure the current. To ensure that its inclusion does not significantly increase the total resistance of the circuit and alter the current being measured, an ammeter should possess a very small resistance.