Most automobiles have vertical antennas for receiving radio broadcasts. Explain what this tells you about the direction of polarization of E in the radio waves used in broadcasting.
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Most automobiles have vertical antennas for receiving radio
broadcasts. Explain what this tells you about the direction of polarization
of E in the radio waves used in broadcasting.
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- Use phasor-form Maxwell’s equations to solve the following problems:If the satellite antenna now transmits a 35kW signal, what is the maximum value of the electric field in 10 − 3 V/C?How does the intensity of an electromagnetic wave depend on its electric field? O It is proportional to the time average of the electric field strength squared O It is proportional to the time average of the electric field strength O It does not depend on the electric field It is proportional to the instantaneous electric field strength
- Polarizers: Three polarizers with different axes of transmission will be placed in the path of an unpolarized laser beam with an intensity of 1000 W/m². The transmission axis of polarizer A is vertical (0°), that of B is rotated 35.5° clockwise with respect to vertical, and that of C is rotated 53.3° clockwise with respect to vertical. The polarizers can be placed in any order, but the second polarizer must be 522 mm from the first, and the third must be 229 mm from the second. (a) Find the arrangement of polarizers that maximizes the transmitted intensity and compute the maximum intensity. (b) Find the arrangement of polarizers that minimizes the transmitted intensity and compute the minimum intensity.A plane electromagnetic wave has a maximum electric field of magnitude 2.99 x 10-3 V/m. Find the maximum magnetic field amplitude. Number i UnitsTo maximize the magnitude of the current induced in a receiving antenna, should the antenna be oriented parallel or perpendicular to the polarization of the electromagnetic wave? Explain your reasoning.
- 1 What is the electric field amplitude in an electromagnetic wave that has a magnetic field amplitude of 5.00 x 10-4rmT? Your units should be in V/m, but do not include your units in the answer box.g . Explain what the polarization of electromagnetic waves is. State two examples for a possiblepolarization of a wave as well as an example for its application.