Ohm's law/ Non-Ohmic Conductor Flashcards

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1
Q

when varying the current alters the ammeter and voltmeter reading but would the ratio be constant value

A

yes

in a graph as the line is straight but if you do V/I you would get the same ratio

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2
Q

what is the formula

A

V=IR

if were to find out the ratio/the resistance you need to change the formula to R=V/I

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3
Q

what is the following what is it measured in
V
I
R

A

V- voltage in volts V
I- current in amperes A
R- resistance in Ohms Ω

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4
Q

does a non-ohmic conductor have a linear relationship between voltage and current
what about the gradient

A

no

the gradient will not be constant because the resistance changes when current changes

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5
Q

is a filament lamp a ohmic conductor and why

A

no
because as current increase in the filament its temp increases resistance increases with temperature so the ratio of V to I is not constant

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