The charging current for a capacitor is 0.2 A. Find displacement current:
Correct answer: A. 0.2 A
- A. 0.2 A
- B. 0.4 A
- C. 0.1 A
- D. Zero
Explanation
According to Ampere's Law, the sum of the conduction current and displacement current through any closed surface is zero. Therefore, since the charging current for the capacitor is 0.2A, the displacement current must also be 0.2A in the opposite direction, Displacement current = charging current
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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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