Physics, asked by pranitkumar, 1 year ago

How can Ohm's law be used to define ohm?

Answers

Answered by moniki
19
Ohm’s Law: 

This law states that the ratio of potential difference between the ends of a conductor to the current flowing through the conductor is a constant. This constant is defined as Resistance of the conductor.ie,

V/I=R

Where R is a constant and known as resistance.The unit of resistance is "ohm".1 ohm is the resistance offered by a current of 1 ampere passing through a current carrying conductor when it 's potential difference is 1 volt


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Answered by naincy5
7
ohm is the unit of resistance . when we take one conducting metal and don't change its physically like ( size, metal,lenght, and cross section area ) then potential difference (v) is directly proportional to current (I)
where if we realise proportional sign then we use a constant resistant( R ) so
the formula comes
V=R ×I
R=V/ I
put the unit of potential difference and current
R= volt/ ampere = ohm
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