Y9 sci Ohm's law intro
Presentation
•
Science
•
9th Grade
•
Practice Problem
•
Medium
Gemma Mountford
Used 1+ times
FREE Resource
13 Slides • 11 Questions
1
2
3
4
5
6
7
8
9
10
11
12
13
Multiple Choice
Recall which variable the symbol I represents. (capital i)
Current
Voltage
Power
Resistance
14
Multiple Choice
Recall which variable the symbol V represents.
Current
Voltage
Power
Resistance
15
Multiple Choice
Recall which variable the symbol R represents.
Current
Voltage
Power
Resistance
16
Multiple Choice
Recall which symbol is used to represent the units of resistance.
R
Ω
α
β
17
Multiple Choice
USE YOUR NOTES!
A lightbulb has a constant resistance.
The current entering the lightbulb is increased.
State what happens to the voltage across the lightbulb.
increases
decreases
stays the same
exponential
18
Multiple Choice
USE YOUR NOTES!
A speaker has a constant resistance.
The current entering the speaker is not changed.
State what happens to the voltage across the speaker.
increases
decreases
stays the same
exponential
19
Multiple Choice
USE YOUR NOTES!
A refrigerator has a constant resistance.
The voltage across the refrigerator is decreased.
State what happens to the current through the fridge.
increases
decreases
stays the same
exponential
20
Multiple Choice
USE YOUR NOTES!
A toaster has a constant resistance.
The voltage across the toaster is increased.
State what happens to the current through the toaster.
increases
decreases
stays the same
exponential
21
Multiple Choice
USE YOUR NOTES!
A battery in a circuit has a constant voltage.
The resistance of a bulb in the circuit is increased.
State what happens to the current through the bulb.
increases
decreases
stays the same
exponential
22
Multiple Choice
USE YOUR NOTES!
A battery in a circuit has a constant voltage.
The resistance of a bulb in the circuit is kept the same.
State what happens to the current through the bulb.
increases
decreases
stays the same
exponential
23
Multiple Choice
USE YOUR NOTES!
A battery in a circuit has a constant voltage.
The resistance of a bulb in the circuit is decreased.
State what happens to the current through the bulb.
increases
decreases
stays the same
exponential
24
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