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प्रश्न
State the relation correlating the electric current flowing in a conductor and the voltage applied across it. Also, draw a graph to show this relationship.
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उत्तर
The flow of current (I) in the conductor is directly proportional to the potential diffidence (V) established across it provided the physical conditions remain same.
V is directly proportional to I
V = IR This is called as Ohm’s law.
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संबंधित प्रश्न
Will current flow more easily through a thick wire or a thin wire of the same material, when connected to the same source? Why?
Is Ohm’s law universally applicable for all conducting elements? If not, give examples of elements which do not obey Ohm’s law.
- Draw a V-I graph for a conductor obeying Ohm’s law.
- What does the slope of V–I graph for a conductor represent?
Tick(✓) the correct choice in the following:
Ohm's law is applicable to
Ohm’s law states the relationship between power and voltage.
The resistance of a nichrome wire at 0°C is 10Ω. If its temperature coefficient of resistivity of nichrome is 0.004/ °C, find its resistance of the wire at boiling point of water. Comment on the result.
Assertion: The statement of Ohm’s law is K = IR.
Reason: V = IR is the equation which defines resistance.
What is meant by resistance of a conductor ? Define its SI unit.
