Define the following terms: electrical circuit, linear circuit, wattmeter, and potential transformer.

Step 1: Complete the sentences for Question 1.1.

• 1.1.1: An electrical circuit is a system of interconnected electrical elements such as resistors, inductors, capacitors, voltage sources, current sources and switches.
• 1.1.2: A linear circuit is a circuit whose parameters are constant and do not change with a change in voltage or current.
• 1.1.3: A wattmeter is a measuring instrument which consists of a current coil and a voltage coil.
• 1.1.4: A potential transformer is a step-down transformer that is used with a low-range voltmeter to measure voltages in excess of 500 V safely.