Question

A moving-coil instrument gives a full-scale deflection when the current is 40mA and its resistance is 25 Ω. Calculate the value of shunt to be connected in parallel with the metre to enable it to be used as an ammeter for measuring currents up to 50A

Answer 1

.04 * 25 = (50 - .04) * s

Answer 2

Vm = 0.04 *25 = 1.0 volt across meter @ full-scale.

Rs = Vm/I = 1.0/(50-0.04) = 0.020 Ohms.

Answer 3

I appriciate

Answer 4

Good

Answer 5

Machines

Answer 6

A moving coil instrument gives a full scale deflection when the current is 40mA and it's resistance is 25, Calculate the value of the shunt to be connected in parallel with the meter to enable it to be used as an ammeter for measuring current up to 50A.