As the charging potential alternates, the charge on the antenna
Correct answer: B. constantly reverses
- A. remain same
- B. constantly reverses
- C. always positive
- D. always negative
Explanation
As the charging potential alternates, the charge on the antenna also alternates in polarity. When the potential is positive, the charge on the antenna becomes positive, and when the potential is negative, the charge on the antenna becomes negative. Therefore, the charge constantly reverses its polarity.
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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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