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WorksheetsOhm's Law
Total questions: 15
Worksheet time: 17mins
A 3-V battery sends a current of 0.10 A through a light bulb. What is the resistance of the filament of the bulb?
.033 Ω
30 Ω
.3 Ω
300 Ω
______ in a circuit is directly proportional to the electric potential difference
AMMETER
CURRENT
VOLTMETER
OHM’S LAW
Ohm's law is the relationship between...
Circuits, switches and resistors
Voltage, Amps and Circuits
Amps, Ohms and Volts
Voltage, Current and Resistance
Which statement fully describes the graph shown.
As current increases voltage decreases (inversely proportional). This graph does not follow Ohm's law, it is for a non-ohmic component.
As voltage increases current increases (directly proportional). This graph follows Ohm's law, it is for a non-ohmic component.
As voltage decreases current increases (inversely proportional). This graph does not follow Ohm's law, it is for an ohmic component.
As voltage increases current increases (directly proportional). This graph follows Ohm's law, it is for an ohmic component.
This graph is for a filament lamp. What is the reason for the shape of the line shown on the graph?
Filament lamps are variable resistors. So we can use a sliding scale to change their resistance, which will change the current going through them.
Filament lamps cool down when current runs through them, their resistance increases causing the current to decrease over time.
Filament lamps heat up as current runs through them, this increases resistance causing the current to decrease over time.
Filament lamps heat up as current runs through them, this increases resistance causing the current to increase over time.
Select all that apply. A cooling fan is a...
Ohmic component
Non-ohmic component
Component that allows current to flow in both directions.
Does obey ohms law.
Which graphs follow Ohm's law?
Graph B only
Graph A and C only
Graph A only
None of the graphs
Select all of the following that correctly describe what a volt meter measure?
A volt meter measures the potential difference (or voltage) passing through a circuit element.
A voltmeter measures the electric current across a circuit element.
A volt meter measures the potential difference (or voltage) across a circuit element.
A voltmeter measures the electric current passing through a circuit element.
An electric fan is connected to a 60-V battery. An ammeter is used to measure the current which reads 2A. What should the ammeter read if the fan was connected instead to a 120-V outlet?
2A
4A
30A
60 A
What does the slope of your voltage vs current graphs represent?
Voltage drop across the device
Current through the device
Resistance of the device
Power of the device
What does it mean for the resistance of an object that is non-ohmic?
The resistance of the device high.
The resistance of the device is low.
The resistance of the device is constant with increasing current.
The resistance of the device is not constant with increasing current.
Which of the following graphs best represents the relationship between current and voltage?
What does the slope of a voltage( y axis)- current( X axis) graph represents?
Voltage
Current
resistance
charge
