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zainabrehman
what is the smallest total resistance which can be obtained using a 6 ohm and a 12 ohm resistor. 2ohm , 4ohm, 6ohm,8ohm
1/Req = 1/R1+1/R2|| 1/Req= (R1+R2)/(R1*R2) || Req = (R1*R2)/ (R1+R2) || Req=(6*12)/(6+12)=4ohm .........the second choice is right...
how many more have you?