12th Physics Practical No.9 ~ Resistance of Galvanometer by Kelvin's Method

12th physics practical book answers pdf Maharashtra board

~ Resonance Tube~ Resistance of Galvanometer by Kelvin's Method

Questions

Q1.What is a balance point?

The null point or balanced point is an arrangement of resistors across the arms of a Wheatstone bridge or meter bridge such that the deflection in the galvanometer is zero.

Q2.What happens if the galvanometer and cell are interchanged?

If the galvanometer and the cell are interchanged then the balance point remains unchanged. Hence, the galvanometer will not show any current and there will be null deflection

Q3.Can you use the shunt for galvanometer?

Yes, Shunt resistance is used for converting a galvanometer into ammeter as most of the current will flow through it and only a small fraction of current will flow through the galvanometer, which is sufficient to make a deflection.

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