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प्रश्न
Four resistors each of resistance 5 Ω are connected in parallel. What is the effective resistance?
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उत्तर
Effective Resistance = `1/"R"`
= `1/5 + 1/5 + 1/5 + 1/5`
`1/"R" = 4/5`
∴ R = `5/4`
= 1.25 Ω
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