WorksheetsPHYSICS- Properties of Electrical Circuits
Total questions: 20
Worksheet time: 3600secs
Which of the following correctly states relationship between voltage, resistance, and current in a circuit?
Current is directly related to voltage but inversely related to resistance.
Current is directly related to both voltage and resistance.
Current is inversely related to both voltage and resistance.
Current is directly related to voltage but is not affected by resistance.
What is the equivalent or total resistance (Re) across this circuit?
3 kΩ
10 kΩ
13 kΩ
18 kΩ
How would the equivalent resistance be determined?
1 / Req = (1/5) + (1/8) + (1/3) Ω
120 Ω
1.5189873 Ω
1 / Req = (1/5) * (1/8) * (1/3) Ω
If the length of a wire increases, the resistance ____________
a. decreases
b. increases
c. stays the same
d. unknown
How does the thickness of a wire affect resistance?
A thicker wire has more resistance
A thinner wire has more resistance
Thickness of a wire does not affect resistance
As resistance increases, the current in a circuit will
increase
decrease
stay the same
burn up
What effect does a hotter temperature have on resistance?
No effect
Increases resistance
Decreases resistance
Stays the same
Remember: V=IR and P=VI
Why is electricity transmitted in high voltages?
less dangerous to humans.
less prone to fire in transmission cables.
to power more appliances.
to reduce energy loss.
When electricity is transmitted over long distances, the greatest power loss occurs because of _____________________
high voltage
low voltage
high current
low current
Identify the typical voltages found on power lines from
a) power plant - substation
b) substation-neighborhood transformer
c) neighborhood transformer-house
a) 240 V
b) 600-2400 V
c) 600 kV
a) 120 V
b) 240 V
c) 600 V
a) 600 V
b) 240 V
c) 120 V
a) 600 kV
b) 600-2400 V
c) 240 V
