Electromagnetic waves consist of:
Correct answer: B. Electric and magnetic fields moving at right angle to each other
- A. Electric and magnetic fields moving parallel to each other
- B. Electric and magnetic fields moving at right angle to each other
- C. Electric field moving with velocity of light
- D. Magnetic field moving with velocity of light
Explanation
Electromagnetic waves (EMW) consist of oscillating electric and magnetic fields that propagate through space. These fields are perpendicular to each other and to the direction of wave propagation. EMW travel in the form of transverse waves, meaning the oscillations of the electric and magnetic fields are perpendicular to the direction in which the wave moves.
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A p-n junction forms when p-type and n-type semiconductor regions meet, creating a depletion layer, barrier potential and rectifying action. The work covers forward and reverse bias, junction current, diode characteristics, and how a diode converts alternating current into pulsating direct current through half-wave and full-wave rectification.
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