Electromagnetic waves do not transport.
Correct answer: B. Charge
- A. Energy
- B. Charge
- C. Information
- D. Momentum
Explanation
Electromagnetic waves are propagating disturbances in electric and magnetic fields; they are composed of photons. While they can interact with and exert forces on charges, they do not consist of or carry net electric charge.
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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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