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Ohm's law simple learning BY Yuvi - Study Point

Hey guys, have you ever heard about Ohm's law, ok so I will teach you in an easy way. So let's get started.
  • It is the basic rule of electricity and it explains the relationship between voltage, electric current & resistance.
  • Ohm's law states that the electric current which is flowing through a circuit or conductor is directly proportional to the voltage and inversely proportional to the resistance.
  • In other words, if resistance is not changed then the electric current flowing through a conductor will increase with the increase in voltage.
  • And if the voltage is not changed then the electric current which is flowing through a conductor decreases with the increase in resistance.   
Ohm's law formulas,

V = I * R
R = V / I
I = V / R
Ohm's law states that Resistance (R) of the conductor is constant.
[*Note = But research shows that the resistance is directly proportional to the length of the conductor and inversely proportional to the cross-section area of the conductor.] 
  • Here, V = voltage applied to a circuit or a conductor, 
R = resistance of the conductor,
I = current flowing through the circuit or conductor.

  • In other words, the current passing through a material or a conductor or a circuit is directly proportional to the potential difference or the voltage across the two points. 
  • Ohm's law is applied only at a constant temperature. If the temperature is not constant then the statement of the ohm's law becomes wrong.
  • As constant temperature makes the resistivity constant which makes the resistance constant. 


  {In this lecture video I have given the brief explanation about Ohm's law}


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