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  • A uniform wire is cut into three parts with their lengths in the ratio 2:3:6. The ends of each of these three part are connected across an ideal battery of 10 V. If a current of 5 A is drawn from the battery, find the initial resistance of the wire.</p

A uniform wire is cut into three parts with their lengths in the ratio 2:3:6. The ends of each of these three part are connected across an ideal battery of 10 V. If a current of 5 A is drawn from the battery, find the initial resistance of the wire.

 

 

Answers (1)

I=I_1+I_2+I_3

\\=\frac{E}{R_1}+\frac{E}{R_2}+\frac{E}{R_3}\\\\=\frac{10}{2X}+\frac{10}{3X}+\frac{10}{6X}\\\\5=\frac{60}{6X}\\X=2\Omega

R=4+6+12=22\Omega

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Safeer PP

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