Question 4 (b) How can three resistors of resistances 2 Ω, 3 Ω and 6 Ω be connected to give a total resistance of (b) 1 Ω ?
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Solution
(b) The following circuit diagram shows the connection of the three resistors.
All the resistors are connected in series. Therefore, their equivalent resistance will be given as 1R=1R1+1R2+1R3 12+13+16=3+2+16=66=1Ω R=1Ω Therefore, the total resistance of the circuit is 1Ω.