ENGR-103 Test 3 Questions With Correct
Answers
What is an electrical circuit? - answerA closed path on which electrons flow from a voltage
source
Remember for parallel resistances, the individual resistor current adds together and the
___________ is constant. - answervoltage
Remember for seri...
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
Elements that absorb power will have _________ values of power while elements that supply
power will have __________ values. - answer✔positive; negative
To flip polarity of a circuit... - answer✔multiple voltage by -1
Passive sign convention - answer✔Satisfied when the current enters through the positive
terminal of an element and
p = +vi. If the current enters through the negative terminal, p = -vi.
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