Ammeter is always useda)to simulate the element through which current ...
Explanation:Ammeter is a device used to measure current. Since it has to allow the complete current flowing in the circuit through it, it has to be connected in series. For this reason, ammeters have very low values of resistances so that they do not add to the value of resistance connected in the circuit.
View all questions of this test
Ammeter is always useda)to simulate the element through which current ...
Understanding the Ammeter Usage
An ammeter is a crucial instrument used in electrical circuits to measure current. Its correct application is essential for accurate readings and circuit functionality.
Why Option B is Correct
- Current Measurement: An ammeter is specifically designed to measure the flow of electric current in a circuit.
- Series Connection: To accurately measure this current, the ammeter must be connected in series with the circuit element. This ensures that all the current flowing through the element also flows through the ammeter, allowing for precise measurement.
- Low Resistance: Ammeters are designed with very low internal resistance. This characteristic minimizes any impact on the overall circuit, ensuring that the current remains unaffected by the measurement process.
Why Other Options are Incorrect
- Option A: Simulating the element is not the primary function of an ammeter. It measures current, not simulates elements.
- Option C: An ammeter cannot measure voltage; a voltmeter is used for that purpose. Therefore, simulating voltage measurement is incorrect.
- Option D: Connecting the ammeter in parallel would lead to short-circuiting the device under test, resulting in damage to both the ammeter and the circuit.
Conclusion
In summary, connecting an ammeter in series with the circuit element allows for accurate current measurement without affecting the circuit's operation, making option B the correct answer.