Electromagnetism: Intermediate

Question 1

Equivalent capacitance for capacitors in series and in parallel

Answer 1

Capacitors directly sum in parallel

Question 2

Energy stored in a capacitor

Answer 2

Question 3

Dielectric constant

Answer 3

Question 4

Ohm’s Law

Answer 4

Question 5

Definition of resistance

Answer 5

Question 6

Power dissipated by a resistor

Answer 6

Question 7

Resistors in series and parallel

Answer 7

Series: add

Parallel: add inverses

Question 8

Voltage across a resistor

Answer 8

Question 9

RC Time Constant

Answer 9

Question 10

Meissner Effect

Answer 10

As a superconductors transitions to its superconducting state, it expels magnetic field. That is, the magnetic field lines bend around it, drastically reducing flux.

Question 11

Inductor differential equation

Answer 11

Question 12

Energy stored in an inductor

Answer 12

Question 13

Magnetic field energy density in vacuum

Answer 13

Question 14

Time constant for R-L circuits

Answer 14

Question 15

For inductors and capacitors, does inductance lead or lag voltage?

Answer 15

Inductor: voltage leads current

Capacitor: voltage lags current

“ELI the ICE man”

Question 16

Power through an arbitrary circuit element

Answer 16

Question 17

Conditions for circuit resonance in an RLC circuit

Answer 17

Question 18

Speed of light in vacuum (variable expression)

Answer 18

Question 19

Relationship between the electric field and the magnetic field at a given time and location in an electromagnetic wave

Answer 19

The two fields are in phase, differ in magnitude by a constant multiple of c, and are orthogonal, with the direction of propogation given by the Poynting vector.

Question 20

Poynting Vector

Answer 20

Question 21

Poisson’s equation

Answer 21

Question 22

Plane charge field and line charge field

Answer 22

Question 23

Electrostatic boundary conditions

Answer 23

Question 24

In what direction does the electric field point just outside a conductor?

Answer 24

Perpendicular to the surface of the conductor.

Question 25

Expression for electrical energy not using the field

Answer 25

Question 26

Magnetostatic boundary conditions

Answer 26

Question 27

Cyclotron radius and frequency

Answer 27

Question 28

Electric and magnetic dipole radiation

Answer 28

Question 29

Magnetic field of a straight wire

Answer 29

Question 30

Magnetic field of a plate

Answer 30

Question 31

Magnetic field of a solenoid

Answer 31

Question 32

Magnetic field of a toroid

Answer 32

Question 33

Faraday’s law (circuit form)

Answer 33

Question 34

Mutual inductance

Answer 34

Question 35

Definition of (self) inductance

Answer 35

Question 36

(Self) inductance of a solenoid

Answer 36

Question 37

Radiation of an accelerating point charge (Larmor formula)

Answer 37

Question 38

Definition of intensity of electromagnetic radiation

Answer 38

Question 39

Bound charges

Answer 39

Question 40

Bound current

Answer 40

Question 41

Definitions of auxiliary fields

Answer 41

Question 42

Form of auxiliary fields in linear media

Answer 42

Question 43

Magnetic relative permeability and susceptibility

Answer 43

Question 44

Electrical permittivity

Answer 44