question archive the ammeter in the figure reads 3

the ammeter in the figure reads 3

Subject:PhysicsPrice:2.85 Bought3

the ammeter in the figure reads 3.0 A. a) Find 12. Express your answer usingtwo significant figures, in Amps. b) Find . Express your answer usingtwo significant figures, in Volts. 
I found Il which was 1.0A. I can't find the rest b/c I don't know how to get the EMF. 3.0 SI 
4.5 a 

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