Question

(a) What do the letters p.d stand for?
(b) Which device is used to measure p.d?

Answer 1

Hint: In order to answer this question, we will first mention the full form of P.D and then we will explain the concept of P.D. And then we will name the device that is used to measure the P.D. And we will then explain the device.

Complete answer:
(a) The amount of labour required to transfer a unit charge from one place in an electric field to another is defined as the electrical potential difference. In other terms, the potential difference is the difference between the two charged bodies' electric potentials. The two bodies are said to have a potential difference when one of them is charged to a different electric potential than the other. Both bodies are under duress and are striving to reach their full capacity. The unit of potential difference is volt.

(b) The topic is Physics is a fascinating discipline of science with intriguing theories, equipment, and discoveries. The Voltmeter, often known as a voltage metre, is an instrument used to measure the voltage or potential difference between two points in an electronic or electrical circuit. These instruments are typically employed in alternating current or direct current circuits. Specialized voltmeters could be used to measure the Radio Frequency (RF) voltage.

A basic analogue voltmeter is made up of a sensitive galvanometer (current metre) that is connected to a high resistance series. The internal resistance of the metre should be high. Otherwise, the circuit's operation during the test would be disrupted by a significant current draw. The series resistance value and the galvanometer sensitivity determine the voltage range indicated by the metre.

Note:The Voltmeter, often known as a voltage metre, is an instrument used to measure the voltage or potential difference between two points in an electronic or electrical circuit. These instruments are typically employed in alternating current or direct current circuits.