Light Bulb Resistance
Added by Craig Napier on Dec 15, 2008
This activity uses circuit models to show that a bulb's resistance will increase with increasing current, and explains that this is due to the bulb filament warming up. Pupils should be able to analyse their results by scaling and plotting a line graph, and describe a graph with a dependent variable that has a decreasing rate of increase.
This item teaches:
- about the relationship between the resistance of a bulb and the current flowing through it
- The pupils should know that a bulb's resistance increases with increasing current.
- The pupils should know that the resistance increase is due to the bulb filament warming up.
- The pupils should be able to scale and plot a line graph from a table.
- The pupils should be able to describe a graph with a decreasing rate of increase of the dependent variable.
- Related Items
- This Author
Resistance and Current in a Bulb
This activity uses circuit models to show that a bulb's resi...
This activity introduces light dependent resistors, LDRs, an...
This activity teaches that a thermistor is an electronic com...
View the circuit of a darlington pair.
This activity helps students to identify the trend in solubi...
This is a simulation of four train carriages connected toget...
Using Period to Find Frequency
This model looks at three balls bouncing with different peri...
Voltage Around a Circuit 1
This activity uses a model of charges to explain the way vol...
Resistors in Parallel
This activity looks at several circuits connecting resistors...
V-T Graphs and Distance 2
This activity teaches how to interpret velocity-time graphs ...