The principle of a capacitor is based on which of the following facts?
Correct answer: D. P.otential of a conductor is greatly reduced without affecting the charge in it
- A. Potential of a conductor is greatly increased with a decrease in the charge in it increase in the charge in it. affecting the charge in it
- B. Potential of a conductor is greatly reduced with an increase in the charge in it.
- C. Potential of a conductor is greatly increased without affecting the charge in it
- D. P.otential of a conductor is greatly reduced without affecting the charge in it
- E. Potential of a conductor is greatly increased with an increase in the charge in it
Explanation
The principle of the capacitor is based on the fact that the potential of a conductor is greatly reduced and its capacity is increased without affecting the electric charge in it by placing another earth-connected conductor or an oppositely charged conductor in its neighborhood. This arrangement is, therefore, able to store 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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