In an electromagnetic wave:
Correct answer: D. Power is transmitted in a direction perpendicular to both the fields
- A. Power is transmitted along the magnetic field
- B. Power is transmitted along the electric field
- C. Power is equally transferred along the electric and magnetic fields
- D. Power is transmitted in a direction perpendicular to both the fields
Explanation
Since the propagation of the wave is in direction perpendicular both electric and magnetic field therefore the transmission of power is also in the direction of perpendicular to both magnetic and electric field.
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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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