O lvl Phy: DC Circuits

Question from http://www.sgforums.com/forums/2297/topics/288361

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Answer:

a) R = 1.2 V / 0.6 A = 2 Ω

bi) I = 0.6A /2 = 0.3A (because Y and Z are of same resistance)
ii) 0.6A - 0.3A = 0.3A

c) i) V=IR = 0.3 A * 2 Ω = 0.6V
ii) Potential difference across Z = potential difference across Y (parallel circuit)
= 0.6 V

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