Physics-10th Electricity CBSE Board 2020 Medium
(a) Find the ratio of resistances of two copper rods X and Y of lengths 30 cm and 10 cm respectively and havi…
- (a)Find the ratio of resistances of two copper rods X and Y of lengths 30 cm and 10 cm respectively and having radii 2 cm and 1 cm respectively.
- (b)A current of 500 mA flows in a series circuit containing an electric lamp and a conductor of when connected to 6 V battery. Find the resistance of the electric lamp.
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