Which one of the following electrical meter has the smallest resistance?

CONCEPT:

Electrical Meters and Resistance

• Electrical meters are devices used to measure electrical quantities such as current, voltage, and resistance. The resistance of these meters is an important factor in their design and functionality.
• Ammeter, milliameter, galvanometer, and voltmeter are different types of electrical meters, each with varying resistances.

EXPLANATION:

• Let's examine the given options:
  • Option 1: Ammeter
    • An ammeter is used to measure electric current. It is designed to have very low resistance so that it does not affect the current it is measuring.
  • Option 2: Milliameter
    • A milliameter is a type of ammeter that measures small currents in milliamperes. It also has very low resistance, similar to an ammeter.
  • Option 3: Galvanometer
    • A galvanometer is an instrument for detecting and measuring small electric currents. It has higher resistance compared to an ammeter and milliameter.
  • Option 4: Voltmeter
    • A voltmeter is used to measure electrical potential difference between two points. It is designed to have high resistance to minimize the current draw from the circuit being measured.

Therefore, the correct answer is option 2: Milliameter.