Circuits

Question 1

Current Definition

Answer 1

the flow of positive charge through a conductor, and is measured in amperes, or amps. It is actually negative charges and NOT positive charges that move through a circuit. (A)

Question 2

Ohm’s Law

Answer 2

R = V/I

Question 3

Joule’s Law of Heating

Answer 3

P = IV = I^2R = V^2/R, (W) (joule/second)

Question 4

Multiple Resistors in Series

Answer 4

Same current across all of them, voltage divides proportionally amongst them, Rtotal = R1 + R2 + R3 +…+ Rn

Question 5

Resistors in Parallel

Answer 5

1/Rtotal = 1/R1 + 1/R2 +…+ 1/Rn, Vtotal = V1 = V2 = V3

Question 6

Capacitance Definition

Answer 6

the charge per unit voltage, depends ONLY on the geometry of the plates

Question 7

Capacitance Equation

Answer 7

C = q/V = A/d, (F) (coulomb/volt)

Question 8

Empty Capacitors

Answer 8

do not resist the flow of current and thus act like empty wires

Question 9

Full Capacitors

Answer 9

do not allow current to flow and thus act like broken wires