Question

Two resistors 5 ohm and 15 ohm are connected in series and then parallel. Find the ratio of their equivalent resistance.

Answer 1

Answer:

If 5,15 are connected in series

The equivalent resistance

Req=R1+R2

Req=5+15=20

If they are connected in parllel

Req=R1R2/R1+R2

Req=5×15/20

Req= 15/4

Thei ratio is

Req in series/Req in parallel =20/15/4

=16/3

16:3

Answer 2

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