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Zener Diode

72.: In the c...

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72.: In the circuit shown in figure a 12V power supply with unknown internal resistance r is connected to a battery with unknown EMF E and internal resistance resistance 1ohm & to a resistance of 3ohm carrying a current of 2 A . The current through the rechargeable battery is 1A in the direction shown. Find the unknown current i internal resistance r and EMF E . B) power delivered by 12 volt power supply and power dissipated in 3 ohm resistor

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In the circuit shown in figure, a 12 V power supply with unknown internal resistance $r$ is connected to a battery with unknown emf $E$ and internal resistance 1 $Ω$ and to a resistance of 3 $Ω$ carrying a current of $2 A$ . The current through the rechargeable battery is $1 A$ in the direction shown. Find the unknown current $i$ , internal resistance $r$ and the emf $E$ .

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