Lee Zhi Xian's answer to Edwin's Junior College 2 H3 Maths Singapore question.

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Lee Zhi Xian
Lee Zhi Xian's answer
51 answers (Tutor Details)
Apply ohms law: V=IR here, bearing in mind that the potential difference across each resistor is 20V since they are connected in parallel. Total resistance is then the potential difference divided by the total current