According to Maxwell's hypothesis, a changing electric field gives rise to a.
Correct answer: A. Magnetic field
- A. Magnetic field
- B. Electric field
- C. An e.m.f
- D. Pressure radiant
Explanation
This is a cornerstone of Maxwell's equations (specifically, the Maxwell-Ampere law). It states that a magnetic field can be generated not only by a conduction current but also by a changing electric field (displacement 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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592 free Alternating Current MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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