Write down the values of the resistances fo the galvanomter, voltmeter and ammeter in decreasing order.

Write down the expression for resistance in terms of the factors on which it depends.

The resistance of a galvanometer is R ohms and its maximum reading is I ampere. A shunt is connected across the galvanometer so that it is made an ammeter that can read NI ampere (N>1) The value of the shunt (Sh) in ohms is

Write the mechanism of S_N1 reaction. Arrange the following alkyl halides in the decreasing order of their reactivity towards S_N1 reaction: 1^@ alkyl halide, 3^@ alkyl halide, 2^@ alkyl halide, methyl halide.

To increase the range of an ammeter the value of the 'shunt' resistance has to be

Write 'Yes' for correct statements and 'No' for incorrect statements. The range of voltmeters increases by increasing the value of the multiplier.

A galvanometer of resistance R ohm when used as a voltmeter can read V volts (maximum) A multiplier is connected in series with the Galvanometer so that it is made a voltmeter that can read (NV) volts, (N>1). The value of the multiplier resistance (R_m) in ohms is