When the electric field is maximum value, the magnetic energy of a cavity is
A. At its maximum value
B. At $$\sqrt 2 $$ of its maximum value
C. At $$\frac{1}{2}$$ of its maximum value
D. Zero
Answer: Option D
A. At its maximum value
B. At $$\sqrt 2 $$ of its maximum value
C. At $$\frac{1}{2}$$ of its maximum value
D. Zero
Answer: Option D
A loop antenna is a commonly used for
A. Radar
B. Direction finding
C. Satellite communication
D. All of the above
The divergence of a vector is a scalar, while the curl of a vector is another
A. Scalar
B. Vector
C. Unit vector
D. None of the above
Which antenna is a wideband antenna?
A. Hertz antenna
B. Marconi antenna
C. Folded dipole
D. None of the above
A. Accelerating
B. Retardation
C. Oscillating
D. Lagging the current
Join The Discussion