ENGR-103 Test 3 With Correct Answers

ENGR-103 Test 3 With Correct
Answers

What is an electrical circuit? - ANSWER A closed path on which electrons flow
from a voltage source




Remember for parallel resistances, the individual resistor current adds
together and the ___________ is constant. - ANSWER voltage




Remember for series resistances, the individual resistor voltage drops add
together and the __________ is constant. - ANSWER current




___________ always flows from positive to negative. - ANSWER Current




What is charge? - ANSWER The amount of electrons measured in Coulombs
(C)




What is the abbreviation for charge? - ANSWER Q, q




A charge in motion creates... - ANSWER an electric current

, What is the formula for current? - ANSWER I = Q/t




What is current measured in? - ANSWER Amperes

1 A = 1 C/s




The derivative of charge is... - ANSWER current




Describe a direct current. - ANSWER 1. unipolar, current flows in one
direction

2. time independent

3. represented as a constant




A negative value for current means the current actually flows in the.... -
ANSWER opposite direction




Define voltage. - ANSWER Difference in electrical charge from one point to
another

1 V = 1 J/coulomb




One watt equals... - ANSWER one joule per second