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Answer:
Resistance is the property that resists flow of current.
From Ohm’s law: - V=IR where R=resistance of the conductor.
If huge amount of current flows through a circuit it will produce huge amount of heat which can damage the circuit.
Resistance helps to avoid damage to the circuit when huge amount of current flows.
Resistance will control the flow of current.
When we apply some external field the free electrons will start moving towards the positive end.
They will keep colliding with the positive ions here and there.These collisions give rise to resistance.Greater thecollision more is the resistance and vice-versa.
Resistance is the property that resists flow of current.
From Ohm’s law: - V=IR where R=resistance of the conductor.
If huge amount of current flows through a circuit it will produce huge amount of heat which can damage the circuit.
Resistance helps to avoid damage to the circuit when huge amount of current flows.
Resistance will control the flow of current.
When we apply some external field the free electrons will start moving towards the positive end.
They will keep colliding with the positive ions here and there.These collisions give rise to resistance.Greater thecollision more is the resistance and vice-versa.
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Understanding the Terms Minerals & Ores
Occurrence of Metals
Extraction & Isolation of Metals
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Electrochemical Principles of Metallurgy
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Class 12 Chemistry Isolation of ElementsExtraction of Crude Metals from Concentrated Ore