A battery of emf 3V and internal resistance r is connected in series with a resistor of `55 Omega`
Channel: Doubtnut
Date: 23/08/2020

A battery of emf 3V and internal resistance r is connected in series with a resistor of `55 Omega` through an ammeter of resistance `1 Omega`. The ammeter reads 50 mA. Draw the circuit diagram and calculate the value of r.