A. Hygrometer
B. Hydrometer
C. Ammeter
D. Voltmeter
Check Answer
The correct answer is option D) Voltmeter.
A voltmeter is an instrument that is used to measure the electric potential difference or voltage between two points in an electric circuit. It works by connecting the two points with its leads, and then displaying the voltage difference in units of volts. Voltmeters can be analog or digital, and they can measure both direct current (DC) and alternating current (AC) voltages.
In contrast, a hygrometer is used to measure the humidity or moisture content of the air, a hydrometer is used to measure the specific gravity of a liquid, and an ammeter is used to measure the electric current flowing through a circuit.
A voltmeter is an instrument that is used to measure the electric potential difference or voltage between two points in an electric circuit. It works by connecting the two points with its leads, and then displaying the voltage difference in units of volts. Voltmeters can be analog or digital, and they can measure both direct current (DC) and alternating current (AC) voltages.
In contrast, a hygrometer is used to measure the humidity or moisture content of the air, a hydrometer is used to measure the specific gravity of a liquid, and an ammeter is used to measure the electric current flowing through a circuit.
