The device which is used to measure electric current through a circuit is called a/an ____.
Ammeter
Voltmeter
Ohmmeter
Wattmeter
An ammeter is a device which is used to measure electric current through a circuit. Electric current is measured in amperes, hence the name ammeter.
Redraw the circuit of question 1, putting in an ammeter to measure the current through the resistors and a voltmeter to measure potential difference across the 12 Ω resistor. What would be the readings in the ammeter and the voltmeter?