A resistance of `90Omega` is connected in series with a alvanometer of resistance `100Omega`. A potential difference of 1V produces a deflection of 100 divisions inthe alvanometer.Find the figure of merit galvanometer.

A resistance of 900 ohm is connected in series with a galvanometer of resistance 100 ohm. A potential difference of 1 V produces a deflection of 100 division in the galvanometer. Find the figure of merit of galvanometer.

A galvanometer of resistance 50 Omega is connected to a battery of 3 V along with resistance of 2950 Omega in series. A full scale deflection of 30 divisions is obtained in the galvanometer. In order to reduce this deflection to 20 division the above series resistance should be

A potentiometer wire of length 100 cm has a resistance of 10Omega. It is connected in series with a resistance and an accumulator of emf 2V and negligible internal resistance. A source of emf 10 mV is balanced against a length of 40 cm of the potentiometer wire. what is the value of the external resistance?

A set of n identical resistors, each of resistance R Omega, when connected in series have an effective resistance X Omega and when the resistors are connected in parallel, their effective resistance is Y Omega. Find the relation between R, X and Y.

The potentiometer wire of length 100cm has a resistance of 10Omega. It is connected in series with a resistance of 5Omega and an accumulat or emf 3V having negligible resistance. A source 1.2V is balanced against a length 'L' of the potentionmeter wire. find the value of L.

A cell of emf 2 V and internal resistance 0.1Omega is connected to 3.9Omega external resistance. What will be the potential difference across the terminals of the cell?