Your question in ambiguous. Are you asking what equipment you need to provewhether or not Ohm's Law applies to a particular load? If so, then you need a variable voltage supply, a voltmeter, and an ammeter. As you gradually increase the voltage across the load, you will need to record the voltage and current values. If the resulting graph is a straight line, then the load is 'ohmic' (or 'linear') and obeys Ohm's Law. If the resulting graph is a curved line, then the load is 'non-ohmic' (or 'non-linear') and does not obey Ohm's Law.
The significance is that Ohm's Law - together with the two Kirchhoff's Laws - are used all the time to do all sorts of calculations in circuits.
OHM, who else?!
1826 :)
There is no 'point on a graph' which represents Ohm's Law. It's the shape of the graph that determines whether Ohm's Law applies.If a graph is drawn showing the resulting variation in current for changes in voltage then, for Ohm's Law to apply, the graph must be a straight line.If the resulting graph is not a straight line, then Ohm's Law doesn't apply.
The formula in getting the energy ohm's law is V = IR.
You cannot 'verify' Ohm's Law with a series or parallel circuit. The only way of verifying Ohm's Law is to plot a graph of current against voltage for variations in voltage. If the resulting graph is a straight line, then you have verified Ohm's Law for the load you have used.
The significance is that Ohm's Law - together with the two Kirchhoff's Laws - are used all the time to do all sorts of calculations in circuits.
OHM, who else?!
Everything obeys Ohm's law - antennas, cables, transformers, integrated circuits, etc.AnswerIt is not true that 'everything' obeys Ohm's Law. For a device to obey Ohm's Law, the ratio of voltage to current MUST remain constant for variations in voltage. This is why Ohm's Law is a law of constant proportionality.
1826 :)
Ohm's law says that voltage is equal to current times resistance.
Ohm's Law: Voltage = Current times Resistance
There is no equation for Ohm's Law. Ohm's Law simply tells us that, for ohmic or linear materials, the ratio of voltage to current is a constant.The equation you are, presumably, looking for is derived from the definition of the ohm, not from Ohm's Law, and that is resistance is voltage divided by current.
V=ir
It is an assertion
There is no 'point on a graph' which represents Ohm's Law. It's the shape of the graph that determines whether Ohm's Law applies.If a graph is drawn showing the resulting variation in current for changes in voltage then, for Ohm's Law to apply, the graph must be a straight line.If the resulting graph is not a straight line, then Ohm's Law doesn't apply.
Ohm's law is applicable to all electrical circuits.