The figure shows the current-versus-potential-difference graph for a resistor
http://session.masteringphysics.com/problemAsset/1169372/1/jfk.Figure.22.P29.jpg
What is the resistance of this resistor?
(already got the answer to be 2.0 Omega)
Suppose the length of the resistor is doubled while keeping its cross section the same. (This requires doubling the amount of material the resistor is made of.) Draw the current-versus-potential-difference graph for the longer resistor.
I have no clue what the graph would look like. please help!
http://session.masteringphysics.com/problemAsset/1169372/1/jfk.Figure.22.P29.jpg
What is the resistance of this resistor?
(already got the answer to be 2.0 Omega)
Suppose the length of the resistor is doubled while keeping its cross section the same. (This requires doubling the amount of material the resistor is made of.) Draw the current-versus-potential-difference graph for the longer resistor.
I have no clue what the graph would look like. please help!
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What you need to draw is a graph with a slope of 0.25 instead of 0.5. This is a really odd graph; it should go the other way around (V on the y axis I on the x if you are finding resistance).
Anyway the way to do this is to extend the x axis so it goes out to 20 volts. Leave the y as it is. Draw a line from (0,0) to (20,5).
Anyway the way to do this is to extend the x axis so it goes out to 20 volts. Leave the y as it is. Draw a line from (0,0) to (20,5).