What is the current flowing through the 20-ohm resistor? A. 1 A
B. 2 A
C. 3 A
D. 4 A

2. What happens to the current in a series circuit if the resistance is doubled?

A. It becomes half its original value.
B. It becomes double its original value.
C. It becomes zero.
D. It does not change.

3. A series circuit is constructed with a battery, a light bulb, and a resistor. What happens if the resistor is removed from the circuit?

E. The current increases and the bulb’s light becomes dimmer.
F. The current increases and the bulb’s light becomes brighter.
G. The current decreases and the bulb’s light becomes dimmer.
H. The current decreases and the bulb’s light becomes brighter.

Write maxwell's equations and discuss the terms involved and the results of each equation in classical electrodynamics. if it is possible to write these equations in integral form, give the integral forms. find the wave equation for electromagnetic waves from the maxwell equations. what is the propagation velocity of electromagnetic waves in space according to the wave equation you find?

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?

The bar of prob. 5/82 is repeated here. the ends of the 0.4-m bar remain in contact with their re- spective support surfaces. end b has a velocity of 0.5 m/s and an acceleration of 0.3 m/s2 in the di- rections shown. determine the angular accelera- tion of the bar and the acceleration of end a.