Electromagnetics Review

Which equation is incorrect for free space region:

Maxwell's 4th equation in charge free steady current free space suggests:

• Magnetic field can be produced even if no current element is present due to spacial variation in electric field

• Electric field can be produced even if no current element is there

• Time variation of electric field can produce magnetic field even if no current density is there

• Time variation of magnetic field can produce electric field even if no charge density is there

Speed of light value in vacuum is:

Phase velocity (equals to light of speed) formula in free space region is represented by:

The wavelength formula in free space region could be represented with the equation below, except:

The ratio between E/H in free space is called:

• Intrinsic wave impedance

• Intrinsic wave inductance

• Ekstrinsic wave impedance

• Intrinsic wave capacitance

The value of intrinsic wave impedance in free space is:

A uniform plane wave is travelling in the positive z direction in free space.

If the amplitude of the electric field Ex is 100 V/m, and the wavelength is 25 cm, calculate the frequency:

• 1.2 GHz

• 120 GHz

• 0.12 GHz

• 12 GHz

The incorrect term of basic phenomena resulting from the interaction of the charged particles in materials with the electric and magnetic fields is:

• conduction

• induction

• magnetization

• polarization

The material that are characterized by many free electron is called:

• magnetic

• dielectric

• insulator

• conductor