When a steady current is passed through a ballistic galvanometer, then...
As long as charge passes through the meter, there is no significant deflection of the moving system. The moving system deflects only after the charge has completely passed through the meter.
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When a steady current is passed through a ballistic galvanometer, then...
Explanation:
A ballistic galvanometer is a type of sensitive galvanometer that is used to measure the quantity of charge passed through it. It is based on the principle of electromagnetic induction. When a steady current is passed through a ballistic galvanometer, the deflection produced will be zero. This is because the galvanometer is designed to measure the quantity of charge that passes through it, and a steady current does not produce any change in the quantity of charge.
There are several factors that affect the deflection of a ballistic galvanometer, including the strength of the magnetic field, the resistance of the coil, and the duration of the current pulse. However, in the case of a steady current, these factors do not come into play, and the deflection remains zero.
Therefore, the correct answer to the question is option B, which states that the deflection will be zero when a steady current is passed through a ballistic galvanometer.
Conclusion:
A ballistic galvanometer is a sensitive instrument used to measure the quantity of charge passed through it. When a steady current is passed through it, the deflection produced will be zero, as there is no change in the quantity of charge passing through the galvanometer.