Ohm's law

                        OHM'S LAW
        Ohm's law given by German scientist "Georg siman ohm" in 1827. He was a famous physicist.
Definition - According to ohm's law that the current flowing through a conductor is directly proportional to the voltage and inversely proportional to the resistance.

Ohm's law formula

   Resistor's current I in amp (A) is equal to the resistor's voltage V in volt (V) divided by the resistance R in ohm (Ω). 

                               I = V/R 

Where ,
             I = current, 
             E= voltage,  

             R = resistance 

Resistance calculation 

  When we know the value of  voltage and current we easily find the value of resistance by using the formula..

                          R = V/I

Voltage calculation

  When we know the value of resistance and current we can easily find the value of voltage by using the formula..

                         V = IxR

   

Example#1

     If R = 24 ohm and I = 0.25 amps then find the value of voltage (V) ?

Solⁿ : 

      By using the formula V = IxR we find the voltage.

                           V = 0.25x24

                           V = 6 volt

 Example #2

   A light bulb has a current of 1 amp when 110 volt is applied. what is the resistance of bulb filament ?

Solⁿ :

      Here we find the resitance by using R = V/I . 

                           R = V/I

                           R = 110 / 1

                           R = 110 ohm

Watch this video to understand the ohms law easily in hindi..