Question

What is the equivalent resistance of three resistors connected in series?​

Answer 1

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Equivalent resistance(R) =R1+R2+R3

Therefore,

R=30+30+30

R=90 Ohm.

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Answer 2

If three or more unequal (or equal) resistors are connected in series then the equivalent resistance is: R1 + R2 + R3 +…, etc