Final answer:
An analog multimeter uses a needle or pointer to display electrical readings, which is achieved through the movement caused by electric current flowing through a galvanometer. In contrast, digital meters convert measurements to digital readings using an A to D converter, allowing for higher accuracy in detecting smaller currents.
Step-by-step explanation:
An analog multimeter uses a needle or pointer to show electrical readings. Analog meters feature a component known as a galvanometer, which moves a needle across a scale to represent various electrical measurements like voltage and current. As electric current flows through the galvanometer (denoted as IG), it causes the needle to deflect proportionally. This deflection is a result of the interaction between the magnetic field and the current-carrying wire within the device. On the other hand, digital meters employ an analog-to-digital (A to D) converter that translates the measured electric quantities into digital readings on a display, comparable to that of a hand-held calculator.
Digital meters are often favored for their ability to detect smaller currents with greater accuracy compared to analog meters that utilize galvanometers. This enhanced sensitivity allows digital meters to provide more precise voltage and current measurements.