Curriculum
Course: Alhussan Physics — Stage 9
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Curriculum

Alhussan Physics — Stage 9

Chapter 11: Forces and Density

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Chapter 12: Energy Transfer

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Chapter 13: Sound Waves

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Chapter 14: Electrical Circuits, Resistance and Power

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Chapter 15: The Earth in Space (Universe and Stars)

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Quiz

14.3 Resistance — Quiz

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  • Questions count: 10
  • Passing grade: B+
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1.
Which term matches this definition? “How much a component opposes the current, measured in ohms (Ω).”
Voltage
Power
Resistance
Current
2.
A lamp has 6 V across it and 0.5 A through it. What is its resistance? (R = V ÷ I)
6 Ω
12 Ω
3 Ω
120 Ω
3.
A 20 Ω resistor has 12 V across it. What is the current? (I = V ÷ R)
0.6 A
−8.0 A
1.7 A
240.0 A
4.
0.3 A flows through a 40 Ω resistor. What is the voltage? (V = I × R)
120 V
12 V
40 V
133 V
5.
True or false? More resistance gives a smaller current for the same voltage.
True
False
6.
Electrons are slowed by obstacles such as vibrating ____.
magnets
atoms
photons
cells
7.
True or false? Adding a second lamp in series reduces the resistance.
True
False
8.
Current through a resistor at different voltages. Which graph is correct?
Dr Dabour Hub Academy - figure 1
A
B
C
D
9.
Use the graph. What is the resistance?
Dr Dabour Hub Academy - figure 2
2 Ω
0.05 Ω
20 Ω
200 Ω
10.
A variable resistor is used to:
Store charge
Measure voltage
Make light
Change the current in a circuit
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Part of Chapter 14: Electrical Circuits, Resistance and Power — see every lesson and quiz in this unit.
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