Question

With the help of a labelled diagram. Explain Ohm's law​

Answer 1

Answer:

Ohm’s law states that the voltage across a conductor is directly proportional to the current flowing through it, provided all physical conditions and temperature remain constant.

Mathematically, this current-voltage relationship can be written as,

Ohm's Law Equation

In the equation, the constant of proportionality, R is Resistance and has units of ohms, with symbol Ω.

The same formula can be rewritten in order to calculate the current and resistance respectively as follows:

Ohm's Law Equation

Ohm's Law Equation

Ohm’s law only holds true if the provided temperature and the other physical factors remain constant. In certain components, increasing the current raises the temperature. An example of this is the filament of a light bulb, in which the temperature rises as the current is increased. In this case, Ohm’s law cannot be applied. The lightbulb filament violates Ohm’s Law.

Ohm’s Law Statement: Ohm’s law states that the voltage across a conductor is directly proportional to the current flowing through it, provided all physical conditions and temperature, remain constant.

Ohm’s Law Equation: V = IR, where V is the voltage across the conductor, I is the current flowing through the conductor and R is the resistance provided by the

Answer 2

Answer: :

Ohm's law states that the electric current, through a conductor, is directly proportional to the potential difference across its two ends when, other physical condition like temperature, etc., remain constant.

V∝I

orVI=Constant=R

orV=IR

Thus, the ratio V : I is a constant. This constant is called the resistance (R) of the conductor.

Circuit diagram for Ohm's law:

Explanation. If a graph is drawn between the potential difference (V) and current (I), the graph is found to be a straight line passing through the origin. This shows current is directly proportional to the potential difference. Thus the ratio VI remains constant. This constant is called the resistance of the conductor. The gradient of the straight ling graph is related to the resistance (R) of the conductor.

Explanation: