Question

which of the following determines how far a darsonval meter movement will turn?

the strength of the magnetic field in the coil

the amount of voltage that flows in the circuit

the selector switch

gravitational forces

Explanation:

A d'Arsonval meter movement's deflection (how far it turns) is determined by the current (related to voltage in the circuit, via Ohm's law \( I=\frac{V}{R} \)) through the coil, which creates a magnetic torque. The magnetic field strength in the coil is related to the current, but the key factor driving the deflection's magnitude is the voltage (and thus current) in the circuit. The selector switch changes ranges, not the deflection amount directly. Gravitational forces are irrelevant here. So the correct option is the one about the amount of voltage in the circuit.

Answer:

The amount of voltage that flows in the circuit