how ???????????/!!!! !!!!!!!!!!!!!!!!!The answer is 0.9 A not 0.5 A
yea there is wrong with pdf and flvBut if you chose EMF = 9V then the correct answer is equal 0.9A
And in this solution
http://uccpbank.k12hsn.org/courses/APPhysicsBII/course files/multimedia/lesson36/pdf/derivation3C2_2.pdf
they chose EMF = 5V, and now with EMF=5V the correct answer is 0.5A