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primary 5 Science Singapore

Why is the answer 1?

Date Posted: 2 years ago

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Eric Nicholas K

2 years ago

There need to be an “entry point” into the battery and an “exit point” out of the battery and these must be uninterrupted.

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If A fused, the current will not be able to cycle through the circuit. If B fused, A and C would still light up. If C fused, A, B and D would light up. If D fused, similar to B, A and C would light up. This is because we can trace paths where cycles of the current won't be interrupted.

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Date Posted: 2 years ago

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