the resistance of a certain wire of iron is R.Ifs length and radius are doubled,then the resistance and specific resistance
shivashankarvap830ac:
there is no option.i think that the resistance will be halved and the specific resistance will remain unchanged
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As, R = rho l /a . So, if length is double then resistance of any wire is also double.. N specific resistance become half of its original value...
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As, R = rho l /a . So, if length is double then resistance of any wire is also double.. N specific resistance become half of its original value.
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