ENGR 103 Exam 3 With Complete Solution

ENGR 103 Exam 3 With
Complete Solution

Which law is directly related to Ohm's Law in electrical systems? - ANSWER
Hooke's Law in mechanical systems

Charge Abbreviation - ANSWER q

Charge units - ANSWER Coulombs

Coulombs abbreviation - ANSWER C

Charge is - ANSWER the amount of electrons measured in Coulombs

1 C = - ANSWER 6.241 x 10^(18) electrons

a charge ____________ constitutes an electric current - ANSWER in motion

current abbreviation - ANSWER I

an electric current is - ANSWER the time rate of charge passing through the
cross sectional area of an electrical conductor

I = - ANSWER Δ q/Δ t

I is - ANSWER current

q is - ANSWER charge

t is - ANSWER time

1 A = - ANSWER 1 C/s

current can be ______ or ________ - ANSWER constant, time varying

, i(t) = - ANSWER dq(t)/dt

q(t) = - ANSWER integral of current

two types of current - ANSWER DC (Direct/Average Current) & AC
(Alternating Current)

DC current is 1) 2) 3) - ANSWER 1) unipolar- current travels in only one
direction

2) time independent

3) constant

AC current is 1) 2) 3) - ANSWER 1) bipolar- current alternates direction of
travel

2) time dependent

3) sinusoid

AC circuit analysis requires - ANSWER analysis of circuits in the phasor
domain

Phasor representation of electrical signals are similar to - ANSWER polar
representation of vectors

Voltage abbreviation - ANSWER V

Volatge is - ANSWER the difference in energy level of a unit charge located
between two points in a circuit

1 V = - ANSWER 1 J/C

voltage is measured in - ANSWER Volts (V)