Question Answers

Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > One of the circuits for the measurement of resistance by potentiometer is shown. The galvanometer is connected at point A and zero deflection is observed is observed at length PJ = 30 cm. In second case the secondary cell is changed.

One of the circuits for the measurement of resistance by potentiometer is shown. The galvanometer is connected at point A and zero deflection is observed is observed at length PJ = 30 cm. In second case the secondary cell is changed.

The maximum current in a galvanometer can be 10 mA. Its resistance is 10 Ω. To convert it into an ammeter of 1 A what resistance should be connected in parallel with galvanometer (in 10/ohm)?