Question

a)Three resistors of resistances R1, R2 and R3 are connected (i) in
series, and (ii) in parallel. Write expressions for the equivalent
resistance of the combination in each case.
b)Two identical resistors of 12 2 each are connected to a battery of
3 V. Calculate the ratio of the power consumed by the resulting
combinations with minimum resistance and maximum resistance.
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Answer 1

a) i) R= R1 +R2+R3

ii) 1/R= 1/R1 + 1/R2 +1/R3