Which of the following is the most correct description of how the range of values of voltages that a galvanometer being used as a voltmeter can produce can be extended when a multiplier resistor is used?
A voltmeter is used to measure the voltage of a direct-current source that is estimated to have a voltage of several volts. The galvanometer in the voltmeter has a resistance of a few milliohms. Which of the following correctly explains why the multiplier resistor in such a voltmeter must have a resistance much greater than the resistance of the galvanometer that the multiplier is connected in series with?
The voltage in the circuit shown is 12 V, which is the greatest voltage that can be measured using the circuit as a voltmeter. The resistance of the galvanometer is one-hundredth of the resistance of the shunt.
Find , the voltage across the galvanometer. Answer to the nearest millivolt.
Find , the voltage across the multiplier. Answer to one decimal place.