Question

The electric device used for producing electric current is called a :

• A. generator
• B. galvanometer
• C. ammeter
• D. motor

Hint:

Think about energy conversion:
{Generator:} Mechanical energy \(\rightarrow\) Electrical energy (PRODUCES current)
{Motor:} Electrical energy \(\rightarrow\) Mechanical energy (USES current)
Galvanometer/Ammeter: MEASURE current

Answer 1

The Correct Option is A

Concept: Different electrical devices have specific functions related to electric current. This question asks about the device that *produces* current. Step 1: Understanding the functions of the listed devices
(1) Generator: A generator converts mechanical energy (like rotation from a turbine) into electrical energy. This process *produces* an electric current. It works based on electromagnetic induction.
(2) Galvanometer: A galvanometer is a sensitive instrument used to *detect* and measure small electric currents. It does not produce current.
(3) Ammeter: An ammeter is an instrument used to *measure* the magnitude of electric current flowing in a circuit. It does not produce current.
(4) Motor (Electric Motor): An electric motor converts electrical energy into mechanical energy (motion). It *uses* electric current, it doesn't produce it. Step 2: Identifying the current-producing device From the descriptions, the generator is the device that produces electric current.