Rita built a toy box. She first cut out all the pieces she would need by using the pattern shown. Based on the pattern, which ph
rase best describes the shape of the completed toy box?
A: A cube with a box top
B: A cube with no box top
C: A rectangular prism with a box top
D: A rectangular prism with no box top
A: A cube with a box top
B: A cube with no box top
C: A rectangular prism with a box top
D: A rectangular prism with no box top
2 answers:
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a. ×
A
b. ×
A
c. A
The LED which would glow brightest is LED C with the greatest current and voltage
The LED which would be the most dim is LED B with low voltage and consequently low current.
<h3>How to determine the current</h3>The formula for finding current
I = V/R
Where v = voltage
R = resistance
A. V = 12V
R = 4. 7 + 15 = 19. 7 kΩ = 19700 Ω in series
×
A
B. V = 9V
R = 4. 7 + 1 = 4. 7 kΩ = 4700Ω in series
×
A
C. V= 12V
1/R = =
×
R = = 310. 56 Ω
A
It is important to note that the brightness of a bulb depends on both current and voltage depending on whether the bulb it is in parallel or series.
The LED which would glow brightest is LED C with the greatest current and voltage
The LED which would be the most dim is LED B with low voltage and consequently low current.
Learn more about Ohms law here:
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