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Ohm's Law and Resistance

Explain the c...

Question

Explain the concepts of current, voltage, resistance, potential difference and ohm's law.

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Solution

Voltage: Voltage of a source of electric energy is the work done by the source in moving a unit positive charge from its positive to negative terminal via circuit.
Resistance: Resistance is the opposition caused by a conductor to the flow of a current.
Potential difference: The potential difference between two points is the work done by an external agent in making a unit positive charge go from the first point to the second.
Ohm's law: According to Ohm's law, the current flowing through a conductor is proportional to the voltage across it provided other conditions are same. The constant of proportionality is called resistance of the conductor.

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