Ohm's Law[class-10]

Dear Students ,if you get something from my blog then share it,to help other students...........Thanks..

Ohm's Law

According to the Ohm's law, "The electric current flowing through a conductor is directly proportional to the potential difference across its ends provided the physical conditions (temperature, dimensions, pressure) of the conductor remains the same."

Ohm’s Law Formula

[Voltage= Current× Resistance]

                             [V= I×RV]
where, v= voltage, I= current and  R= resistance
NOTE-In other words by doubling the voltage across a circuit the current will also double.
However if the resistance is doubled the current will fall by half.

In this mathematical relationship the unit of resistance is measured in Ohms.

Limitations of Ohm’s Law

• [1]-Ohm’s law is not applicable in unilateral networks. Unilateral networks allow the current to flow in one direction. 
• Such types of network consist elements like a diode, transistor, etc.
• 
  
• [2]-It is not applicable for the non-linear network. In the nonlinear network, the parameter of the network is varied with the voltage and current.
• 
  
• [3]-Their parameter likes resistance, inductance, capacitance and frequency, etc., not remain constant with the times.
• So ohms law is not applicable to the nonlinear network.

NOTE-Ohm’s law are used for finding the resistance of the circuit and also for knowing the voltage and current of the circuit.