Q Mintz is one of the largest and fastest-growing online platforms dedicated to high-quality Multiple Choice Questions (MCQs) for students, job seekers, and professionals. Our mission is to provide reliable, accurate, and up-to-date learning material that helps users prepare effectively for school exams, competitive tests, departmental assessments, and job interviews.
At Q Mintz, we believe that consistent practice leads to success.
Search
Which instrument is used to measure electric voltage?
A. Ammeter
B. Voltmeter
C. Barometer
D. Hygrometer
Correct Answer Is Option = Voltmeter
Notes / Explanation
The instrument that is used to measure electric voltage is called a voltmeter, and it is one of the basic instruments used in the study of electricity and in electrical work. Voltage is the electrical pressure or force that drives an electric current through a circuit, and it may be thought of as the push that causes the electric charge to flow. It is an important quantity in the study of electricity, and it is measured in a unit called the volt, from which the instrument takes its name. In order to measure the voltage between two points in a circuit, or the voltage supplied by a source such as a battery, the instrument called the voltmeter is used, and it indicates the value of the voltage, either by the movement of a pointer over a scale in older types or by a numerical display in modern electronic types. The voltmeter is connected into a circuit in a particular way, across the two points between which the voltage is to be measured, and it is designed so that it draws very little current, so that it can measure the voltage without significantly affecting the circuit that it is measuring. This manner of connection is different from that of the ammeter, which is used to measure current and is connected in line with the flow of the current so that the current passes through it. The voltmeter and the ammeter are both essential tools for anyone working with electricity, and together they allow the two main electrical quantities of current and voltage to be measured, which is important for understanding and testing electrical circuits and equipment. In modern practice, instruments known as multimeters are often used, which can measure voltage, current and other quantities in a single device, making electrical testing more convenient. The measurement of voltage is important in a great many situations, from checking the charge of a battery to testing the supply of electricity and diagnosing faults in electrical equipment. The study of voltage and its measurement is fundamental to the understanding and use of electricity. For PPSC and other competitive examinations, the key points to remember are that the instrument used to measure electric voltage is the voltmeter, that voltage is the electrical pressure or force that drives an electric current and is measured in volts, that the voltmeter is connected across the two points between which the voltage is to be measured and draws very little current, and that it should be distinguished from the ammeter, which measures current.
