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A battery of voltage 12 V sends a curren...

A battery of voltage 12 V sends a current of 400 mA to an appliance. After a long continuous use, the current drops to 320 mA and the appliance does not operate. Find :
the voltage drop,

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Given : I = 400 mA =` 400 xx 10^(-3) A = 0.4 A, epsi = 12 V`
Voltage drop `v = epsi - V = 12 V -9.6 V = 2.4 V `
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