Week 2

Question 1

Calculating impedance is similar to

Answer 1

calculating resistance.

Question 2

What is an inductor?

Answer 2

Coiled Conductor

Question 3

What does a Coiled Conductor produce?

Answer 3

Magnetic field proportional to current lowing through it.

Question 4

How is a voltage made in an inductor?

Answer 4

A changing magnetic flux.

Question 5

What does a inductor behave like at high frequencies?

Answer 5

Open circuit

Question 6

What does a inductor behave like at low frequencies?

Answer 6

Short circuit (current, but no voltage)

Question 7

By how much does the current lag the voltage by in an inductor?

Answer 7

90 degrees

Question 8

What makes up a capacitor?

Answer 8

Two conductive plates separated by an insulator called a dielectric.

Question 9

What does a capacitor introduce a phase shift to?

Answer 9

Voltage across and current through.

Question 10

By how much does the current lead the voltage by in an capacitor?

Answer 10

90 degrees

Question 11

CIVIL

Answer 11

Capacitor - Current leads voltage

Inductors - voltage leads the current

Question 12

Polar form (A anglesigntheta) to rectangular (B + jC)?

Answer 12

B = Acos(theta) 
C = Asin(theta)

Question 13

Rectangular (B + jC) to Polar form (A anglesigntheta) ?

Answer 13

A = sqrt of B^2 + C^2
theta = inverse tan of C/B