What is Ohm’s Law? Ohm’s Law Statement Formula Examples

ohmslaw-statement-equation

What is Ohm’s Law? Ohm’s Law Statement Formula & Examples

ohms law statement
What is Ohm’s Law?

Ohm’s Law applies to  electric conduction through good conductors.

 

Ohm’s law solved Problems|Problems based on ohm’s law

Ohms Law Statement:

Ohms law can be stated as, the ratio of potential difference (V) between any two points on a conductor to the current (I) flowing between them, is constant, provided the temperature of the conductor does not change.

Ohm’s Law Formula:

 
 
In other words, V/I= constant
 
or V/I= R
where R is the resistance of the conductor between the two points considered.
ohm's-law- equation
ohm’s-law- equation
 
Put in another way, it simply means that provided R is kept constant, current is directly proportional to the potential difference across the ends of a conductor.
 
ohms 2Blaw
 
However, this linear relationship between V and I does not apply to all non-metallic conductors.
Ohm 25E2 2580 2599s 2BLaw 2BFormula
 
 For example, for silicon carbide, the relationship is given by V = KI mwhere K and m are constants and m is less than unity.
 
ohms-law-triangle

 

Ohm’s Law also does not apply to non-linear devices such as Zener diodes and voltage-regulator (VR) tubes.
zener-diode
zener-diode

 

Also Read

  1. Electric current, Voltage, Resistance- Definition, and units
  2. Laws of resistance- Sp: resistance inductance and Conductivity, Effect of temperature on resistance- Temp. coefficient.
  3. D. C. Circuits- Ohm’s law
  4. series, parallel, series-parallel circuits.
  5. Resistance, Temperature coefficient of resistance
    • Conductors, Insulators, Semiconductors
    • Basic physical concepts of Electricity : protons,neutrons,electrons
     

     

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