1. What is Voltage Sensitivity?

Voltage Sensitivity is defined as the deflection produced in the galvanometer when a unit voltage is applied across two terminals. It measures how responsive the galvanometer is to changes in voltage.

2. How Does the Calculator Work?

The calculator uses the Voltage Sensitivity formula:

Where:

• \( S_v \) — Voltage Sensitivity (rad/V)
• \( \theta_d \) — Deflection Angle (rad)
• \( V \) — Voltage across Galvanometer (V)

Explanation: The formula calculates the sensitivity of a galvanometer by dividing the deflection angle by the applied voltage.

3. Importance of Voltage Sensitivity

Details: Voltage sensitivity is crucial for understanding the performance characteristics of galvanometers, which are used to detect and measure small electric currents. Higher sensitivity indicates better performance in detecting small voltage changes.

4. Using the Calculator

Tips: Enter deflection angle in radians and voltage in volts. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical voltage sensitivity range for galvanometers?
A: Voltage sensitivity varies widely depending on the galvanometer design, but typically ranges from 0.01 to 10 rad/V for most laboratory instruments.

Q2: How does voltage sensitivity relate to current sensitivity?
A: Voltage sensitivity and current sensitivity are related through the internal resistance of the galvanometer. Higher voltage sensitivity generally indicates better instrument performance.

Q3: What factors affect voltage sensitivity?
A: Factors include the strength of the magnetic field, number of turns in the coil, suspension system stiffness, and overall instrument design.

Q4: Can voltage sensitivity be improved?
A: Yes, by using stronger magnets, increasing coil turns, or reducing the stiffness of the suspension system, though these changes may affect other performance characteristics.

Q5: Why measure voltage sensitivity in radians per volt?
A: Radians per volt provides a standardized unit that describes the angular displacement of the pointer per unit voltage applied, allowing for consistent comparison between different galvanometers.