Question

explain ohm's law in detail with example for 3 marks I will mark u the brainliest

Answer 1

Take, for example, a voltage of 10 volts, and a current 0.1A. Using the Ohm's Law triangle, it can be seen that: R=VI=100.1=100Ω Example 3. Finally, the other combination is that is the resistance and current are known, then it is possible to calculate the voltage expected across the resistance.

Ohm's law states the relationship between voltage, current and resistance. According to this law, the amount of electricity passing through a conductor between two points in a circuit is directly proportional to the voltage across the two points, for a particular temperature.

Answer 2

Answer:

• Ohm’s law states that the voltage or potential difference between two points is directly proportional to the current or electricity passing through the resistance, and directly proportional to the resistance of the circuit.

• The formula for Ohm’s law is V=IR.

• The SI unit of resistance is ohms and is denoted by Ω.

• Applications of Ohm’s law

     → to calculate the power, efficiency, current, voltage,resistance of an element of an electrical circuit.

• Limitations of Ohm’s Law

    →   Ohm’s law is not applicable for unilateral electrical elements like    diodes and transistors as they allow the current to flow through in one direction only.

   →For non-linear electrical elements with parameters like capacitance, resistance etc the voltage and current won’t be constant with respect to time making it difficult to use Ohm’s law.

• Calculating Different Parameters Using Ohm’s Law

   ⇒To find Voltage(V),

         V = IR

   ⇒To find Current(I),

         I=V/R

   ⇒To find Resistance(R),

       R=V/I