Jason Lee's answer to MoeSatt Hmon's Junior College 1 H1 Maths question.
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Hope this helps.
Date Posted:
7 years ago
thank you it's really helpful but i want to know why it's -200 why put the minus
It's the sign convention that I use, I make voltage rise( voltage source ) as negative and voltage fall (resistors i.e component that consumes power as positive)
It's also can been seen from Kirchhoff voltage law perspective. The Sum of close loop voltage is zero hence Vab + 33I1 = 220
It's also can been seen from Kirchhoff voltage law perspective. The Sum of close loop voltage is zero hence Vab + 33I1 = 220
ok i seeee thank you
Mathematically it is also correct to put voltage rise( voltage source ) as positive and voltage fall (resistors i.e component that consumes power) as negative.
It's also gives you the conclusion that Vab + 33I1 = 220. However I strongly suggest that you stick to one sign convention after you decide which you prefer so as to prevent confusion in future questions. All the best.
It's also gives you the conclusion that Vab + 33I1 = 220. However I strongly suggest that you stick to one sign convention after you decide which you prefer so as to prevent confusion in future questions. All the best.
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