1.

Find the ratio of resistances of two copper rods X and Y of lengths 30 cm and 50 cm respectively and having a radii 3 cm and 2 cm respectively.​​​​​​​

Answer»

Find the ratio of resistances of two copper rods X and Y of lengths 30 cm and 50 cm respectively and having a radii 3 cm and 2 cm respectively.

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