In a potentiometer experiment, the potential gradient is 0.02 V/cm. The emf of a cell that balances at 150 cm is: -

In a Wheatstone bridge, the bridge is most sensitive when: -

A galvanometer of resistance 100 ohm and full-scale deflection current 1 mA is to be converted into an ammeter of range 1 A. The shunt resistance needed is: -

In a potentiometer, when a standard cell of emf 1.02 V balances at 51 cm, the potential gradient is: -

In a meter bridge, if the resistances in the two gaps are interchanged, the null point shifts from 30 cm to: -