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CBSE Class 10 Answered

why it is not necessary that small resistor is not physically smallin the size too?
Asked by pooja pujar | 21 Jun, 2011, 12:00: AM
answered-by-expert Expert Answer
The resistance of a conductor depends on the material, directly propotional to its length and inversely propotional to its cross sectional area.
                        R = ?l / A
 
A conductor having large length will have comparatively small resistance if its cross sectional area is very large.  
Answered by | 21 Jun, 2011, 08:02: AM

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