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Will Current Flow More Easily Through a Thick Wire Or a Thin Wire of the Same Material, When Connected to the Same Source? Why? - CBSE Class 10 - Science

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Questions

Will current flow more easily through a thick wire or a thin wire of the same material, when connected to the same source? Why?

Will current flow more easily through a thick wire or a thin wire of the same material when connected to the same source? Give reason for your answer.

Solution 1

The current will flow more easily through thick wire. It is because the resistance of a
conductor is inversely proportional to its area of cross – section. If thicker the wire, less is resistance and hence more easily the current flows.

Solution 2

Resistance (R) is inversely proportional to the area of cross-section (A) of the
wire. So, thicker the wire, lower is the resistance of the wire and vice-versa.
Therefore, current can flow more easily through a thick wire than a thin wire.

R = ρ.L/A

R ∝1/A

Solution 3

The resistance of a conductor is inversely proportional to its area of cross-section, i.e. R α 1 / A. So as the conductor is a thick wire, its resistance decreases and current will flow easily through it, in comparison with a thin wire.

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Solution Will Current Flow More Easily Through a Thick Wire Or a Thin Wire of the Same Material, When Connected to the Same Source? Why? Concept: Ohm’s Law.
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