The d'Arsonval movement is a moving coil meter and is one of the most common analog meter movements. It is operated on DC circuit.

The d'Arsonval movement is a moving coil meter and is one of the most common analog meter movements. It is operated on DC circuit.

• A. Galvanometer
• B. Ammeter
• C. Voltmeter
• D. d'Arsonval

Answer: (D)

The moving-coil mechanism used for DC signals is the d'Arsonval movement. This classic analog meter design uses a coil suspended in a permanent magnetic field, so when current flows through the coil it experiences torque proportional to the current. That torque deflects the pointer, giving a readable DC measurement. In practice, an ammeter and a voltmeter are built from this same movement but with added components (a shunt for current meters and a multiplier resistor for voltage meters). The general term galvanometer describes the broad moving-coil type, but the specific, widely used DC movement in meters is the d'Arsonval movement.

The moving-coil mechanism used for DC signals is the d'Arsonval movement. This classic analog meter design uses a coil suspended in a permanent magnetic field, so when current flows through the coil it experiences torque proportional to the current. That torque deflects the pointer, giving a readable DC measurement. In practice, an ammeter and a voltmeter are built from this same movement but with added components (a shunt for current meters and a multiplier resistor for voltage meters). The general term galvanometer describes the broad moving-coil type, but the specific, widely used DC movement in meters is the d'Arsonval movement.