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Question
Four resistors each of resistance 2Ω are connected in parallel. What is the effective resistance?
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Solution
R1 = 2 ohm
R2 = 2 ohm
R3 = 2 ohm
R4 = 2 ohm
`1/R=1/R_1+1/R_2+1/R_3+1/R_4`
=`1/2+1/2+1/2+1/2=2`
R = 0.5 ohm
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