Alternating current can be produced by:
Correct answer: B. Generator
- A. Electric motor
- B. Generator
- C. Turbine
- D. Transformer
Explanation
Generators convert mechanical energy into electrical energy, producing alternating current (AC) through electromagnetic induction. This process involves rotating a coil of wire within a magnetic field, inducing an AC current in the wire. Generators are commonly used to produce AC electricity in various applications such as power plants, hydroelectric dams, wind turbines, and portable generators.
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About Alternating Current
Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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