Final answer:
To directly measure current in a circuit, one can use an ammeter or a multimeter set to measure current. These devices are connected in series with the component in the circuit to accurately read the current flowing through it.
Step-by-step explanation:
Devices that can be used to measure current directly include the multimeter and the ammeter. An ammeter is designed to measure the flow of current in a circuit, and it is connected in series with the component or device whose current needs measuring.
This series connection is necessary because objects in series experience the same current passing through them. A multimeter can act as both a voltmeter and an ammeter, allowing for the measurement of voltage, current, and resistance.
Measuring Current with an Ammeter
To measure current, an ammeter is placed in series with the circuit. This setup ensures that the exact current flowing through the circuit will also pass through the ammeter. As a result, the ammeter can provide a precise measurement of the current.
Understanding Analog and Digital Meters
There are both analog and digital meters. An analog meter uses a galvanometer to measure current, while a digital meter employs an analog-to-digital converter to display the measurement digitally. Although analog meters are based on a galvanometer and a resistor, most modern uses prefer digital meters for their ease and precision.