The circuit shown in fig 5.230 contains ...

The circuit shown in fig 5.230 contains three resistors `R_1 =100Omega, R_2 =50Omega` and `R_3 =20Omega` and cells of emfs `E_1=2V and E_2`. The ammeter indicates a current of `50mA`. Determine the currents in the resistors and the emf of the second cell. The internal resistance of the ammeter and of the cells should be ignored.

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