###### Asked in Electrical Engineering

Electrical Engineering

# How do you know that the conductor used obeyed ohm's law?

## Answer

###### Wiki User

###### May 14, 2012 7:12AM

A conductor obeys Ohm's Law if the ratio of voltage to current remains constant over a wide range of voltage variations -and, then, only over that particular range of voltages. Put another way, a graph plotted of current against voltage must be a straight line. If the ratio of voltage to current varies, or if the resulting graph is anything other than a straight line, then the conductor does not obey Ohm's Law.

Ohm's Law is by no means an universal law, and only a limited number of materials obey Ohm's Law. Those that do are called 'ohmic' or 'linear' materials; those that don't are called 'non-ohmic' or 'non-linear'.

## Related Questions

###### Asked in Electronics Engineering

### What happens to the resistance as the length of a conductor decreases?

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value of the conductor. Conductors are rated in ohms per foot. To
find the resistance of a conductor multiply the ohms/foot by the
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###### Asked in Music, Scattergories and Words Starting with Certain Letters

### What is a word starting with O that has to do with conductor?

Sounds like an "orchestra" - which is led by a conductor.
Other possibilities would be:
Oboe - and instrument in the orchestra led by the conductor
Overture - an orchestral composition forming the prelude or
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Opera - the music for which is led by a conductor
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conductivity of a conductor.
Also:
ohmmeter - which is used for measuring resistance (the
reciprocal of conductivity)
ohmage - Electrical resistance expressed in ohms
overload - what happens to a circuit if it's not a good enough
conductor

###### Asked in Electrical Engineering

### Does the resistance of a conductor incfrease by any measure when the conductor is in doubled in length?

The resistance is directly proportional to the length of
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section.
If the length is doubled then the resistance will double.
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decreases.....