Electromagnetism Quiz True or False

1.	The electric field E of a single point charge q at a distance r is: -> True False
2.	The number of electric field lines crossing a closed surface: -> Is proportional to the charge enclosed. True False
3.	An LC circuit behaves as: -> A simple harmonic oscillator True False
4.	A solenoid: -> None of the above True False
5.	The electric portion of an electromagnetic wave traveling in vacuum can be written as E_y = 50 cos(2π × 10^-15 t – 2π x) with E_z = E_x = 0, where t is measured in seconds. What is the frequency f of the electric field? -> True False
6.	How may we express the speed of light c? -> True False
7.	Maxwell’s equations yield two separate equations for the electric and magnetic fields E and B. How fast are the E waves moving in comparison to the B waves? -> They are both moving at the same speed c. True False
8.	An ammeter measuring current is hooked up to a circuit and records an continually oscillating current. What kind of circuit is it? -> No circuit creates an oscillating current. True False
9.	Two charges, -q and -q, are placed at an equal distance from point P. What is the electric field at P? -> True False
10.	Current density is defined as: -> Electric charge over time per area True False

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