An ammeter is to be constructed which can read currents up to 2.0A.
Question:

An ammeter is to be constructed which can read currents up to $2.0 \mathrm{~A}$. If the coil has a resistance of $25 \Omega$ and takes $1 \mathrm{~mA}$ for full-scale deflection, what should be the resistance of the shunt used?

Solution: