Question

Two resistances 1 Ω and 2 Ω are connected in series and then in parallel. Find the ratio of the effective resistance of series and parallel combination of resistances.
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Answer 1

HEY FRIEND, HERE IS YOUR ANSWER

3:1

Explanation:

• when two resistors are in series, effective resistance R=R1+R2=1+2=3ohms

• when they are in parallel combination, effective resistance is 1/R=1/R1+1/R2=1+1/2=3/2=1.5

• Now ratio of effective resistance of series and parallel combination is 3:1.5 =2:1

Ratio =2:1 ✔✔

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