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What is (a) the highest, (b) the lowest total resistance that can be secured by combinations of four coils of resistance 4Ω, 8Ω, 12Ω, 24Ω?

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What is (a) the highest, (b) the lowest total resistance that can be secured by combinations of four coils of resistance 4Ω, 8Ω, 12Ω, 24Ω?

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(a) If four resistors are connected in series then resistance

= 4 + 8 + 12 + 24

= 48Ω

(b) If these are connected in parallel

∴ We can get lowest resistance.

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