Multimeter: A multimeter is an electronic instrument. It is mainly used to measure the three basic electrical characteristics of voltage, current, and resistance. It can also be used to test continuity between two points in an electrical circuit. The multimeters can not be used to measure electrical quantities such as frequency, charge, etc. The multimeter has multi functionalities like, it acts like ammeter, voltmeter, and ohmmeter. It is a handheld device with a positive and negative indicator needle over a numeric LCD digital display. An increase or decrease in signal levels can be observed. Multimeters can be used for testing batteries, household wiring, electric motors, and power supplies. All measurements are possible by using one meter only. Digital multimeters are more accurate than analog multimeters. The primary difference between the two is the display, an analog multimeter uses a needle to show the value, while a digital multimeter will show the results as numbers on a screen. The analog multimeter also exhibits low resistance and high sensitivity with scales down, hence a sudden change in the signal can be detected by an analog multimeter more swiftly than a digital multimeter. Analog multimeters are more bulky and costly than digital multimeters,