Ohms law state the relationship between
Answers
Answer:
Electric Current and Resistance
Answer: Ohm's law describes the relationship between three factors that is current, voltage, and resistance.
Explanation:
The amount of steady current flowing through a large number of materials is directly proportional to the potential difference, or voltage, between the materials. Thus, if the voltage V (in volts) between the two ends of a wire made of one of these materials is tripled, the current I (in amperes) is also tripled; and the V/I ratio remains constant. The V/I ratio for a given piece of material is called its resistance R, measured in units called ohms. The resistance of materials subject to Ohm's law does not change over enormous ranges of voltage and current. Ohm's law can be expressed mathematically as V/I = R.
That the resistance, or ratio of voltage to current, for all or part of an electrical circuit at a fixed temperature is generally constant was established in 1827 as a result of the investigations of the German physicist Georg Simon Ohm.
Alternative statements of Ohm's law are that the current I in a conductor is equal to the potential difference V across the conductor divided by the resistance of the conductor, or simply I = V/R, and that the potential difference in the conductor is equal to the product of the current in the conductor and its resistance, V = IR.
In a circuit in which the potential difference or voltage is constant, the current can be decreased by adding more resistance or increased by removing some resistance. Ohm's law can also be expressed as the electromotive force or voltage E of an electrical energy source such as a battery. For example, I = E/R.
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