Question

Last question or q no. 20

Answer 1

Answer:

i) connect in series

ii)connect in parallel.

Explanation:

i)On connecting in series the R gets divided hence

1/Rf Ω =1/R1 Ω +1/R2 Ω

1/Rf Ω =1/5Ω +1/10Ω

= 1/3Ω

or Rf =3Ω (MIN)

ii) on connecting in Series

Rf Ω = R1 Ω + R2 Ω

Rf Ω = 5Ω +10 Ω

=15Ω (MAX.)

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