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122.A capacitor of capacitance 2 micro F is charged to a potential difference of 5 V. Now the charging battery is disconnected and the capacitor is connected in parallel to a resistor of 5 ohm and another unknown resistor of resistance R as shown in figure. If the total heat produced in 5 ohm resistance is 10 micro J then the unknown resistance R is equal to (a) 10 (b) 15 (c) 10/3 (d) 7.5

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Solution

99996115255-0-0

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