A galvanometer has a resistance of 12 mΩ. A current of 150 mA produces full-scale deflection of the galvanometer. A shunt is connected in parallel with the galvanometer to convert it into an ammeter. The resistance of the shunt is 70 µΩ. What is the greatest current that the ammeter can measure? Answer to one decimal place.
Which of the following is the most correct description of how the range of values of currents that a galvanometer can produce is extended when it is converted into an ammeter using a shunt resistor?
The current in the circuit shown is 2.5 mA, which is the greatest current that can be measured using the circuit as an ammeter. The resistance of the galvanometer is ten times the resistance of the shunt.
Find , the current through the galvanometer. Answer to the nearest microampere.
Find , the current through the shunt. Answer to two decimal places.