When an ammeter of negligible internal resistance is inserted in series with circuit it reads 1A. Wh

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When an ammeter of negligible internal resistance is inserted in series with circuit it reads 1A. When the voltmeter of very large resistance is connected across X it reads 1V. When the point A and are shorted by a conducting wire, the voltmeters measures 10 V across the battery. The internal resistance of the battery is equal to

Accepted Answer

= 1A &#8658; Vx = 1 = 1 &#215; X &#8658; X = 1&#937;When Y shorted I = 10 = 12 - Ir &#8658; 10 = 12 - &#8658; 10 + 10 r = 10 = 12 - 12r&#8658; 10r = 2 &#8658; r = 0.2&#937;

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