0 0 votes A $0-1$ Ampere moving iron ammeter has an internal resistance of $50 \: m \Omega$ and inductance of $0.1 \: mH$. A shunt coil is connected to extend its range to $0-10$ Ampere for all operating frequencies. The time constant in milliseconds and resistance in $m \Omega$ of the shunt coil respectively are $2, \: 5.55$ $2, \: 1$ $2.18, \: 0.55$ $11.1, \: 2$ Electrical and Electronic Measurements gate2018-ee electrical-and-electronic-measurements electric-circuits numerical-answers + – Arjun 260 views answer comment Share Follow 0 reply Please log in or register to add a comment.