
Understanding Parallel Circuits

Interactive Video
•
Physics, Science
•
9th - 12th Grade
•
Hard

Emma Peterson
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key difference in calculating total resistance between series and parallel circuits?
In series circuits, resistances are multiplied.
In parallel circuits, resistances are added directly.
In series circuits, resistances are added directly.
In parallel circuits, resistances are subtracted.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a parallel circuit, what remains constant across all resistors?
Power
Voltage
Current
Resistance
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to Kirchhoff's current law in parallel circuits, how is current distributed?
Equally across all branches
Proportionally based on resistance
Inversely based on voltage
Randomly across branches
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which method is used to calculate total resistance in a parallel circuit with two resistors?
Sum of resistances
Sum of inverses
Product over sum
Difference of resistances
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for total resistance using the inverse sum of inverses method?
R1 - R2
R1 * R2
1 / (1/R1 + 1/R2)
R1 + R2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example problem, what is the current through a 2-ohm resistor with a 50-volt source?
25 amps
12.5 amps
50 amps
75 amps
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does increasing resistance in a branch of a parallel circuit affect the current?
Increases the current
Decreases the current
Has no effect on the current
Doubles the current
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