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The formula Q = θ/Sg calculates the electric charge that passes through a galvanometer, where Q is the charge in coulombs, θ is the galvanometer throw in radians, and Sg is the ballistic sensitivity in radians per coulomb.
The calculator uses the formula:
Where:
Explanation: The formula directly relates the deflection of the galvanometer to the amount of charge that has passed through it, using the ballistic sensitivity as a proportionality constant.
Details: Calculating the charge passing through a galvanometer is essential for measuring electrical quantities in ballistic experiments and for calibrating sensitive electrical instruments.
Tips: Enter the galvanometer throw in radians and the ballistic sensitivity in radians per coulomb. Both values must be positive numbers.
Q1: What is galvanometer throw?
A: Galvanometer throw refers to the maximum deflection or displacement that the pointer undergoes when a current passes through the galvanometer.
Q2: What is ballistic sensitivity?
A: Ballistic sensitivity is a measure of how responsive a galvanometer is to changes in current or charge, expressed as the deflection per unit charge.
Q3: When is this formula typically used?
A: This formula is commonly used in physics laboratories for experiments involving capacitor discharge, magnetic flux measurements, and other transient current phenomena.
Q4: Are there limitations to this calculation?
A: The calculation assumes ideal conditions and may need adjustments for factors like damping, temperature variations, and instrumental errors.
Q5: What units should be used for accurate results?
A: For consistent results, always use radians for galvanometer throw and radians per coulomb for ballistic sensitivity.