A galvanometer (coil resistance `99 Omega`.) is converted into an ammeter using a shunt of `1 Omega` and connected as shown in figure (a). The ammeter reads `3 A`. The same galvanometer is convened into a voltmeter by connecting a resistance of `101 Omega` in series. This voltmeter is connected at, shown in figure (b). Its reading is found to be `4/5` of the full scale reading. Find :
(a) internal resistance r of the cell
(b) range of the ammeter and voltmeter
(c) full scale deflection current of the galvanometer.