Three resistors having resistances of `15 Omega`, `3 Omega` and `4 Omega` are connected in series. What is the effective resistance in the circuit?

Explanation

`R_(1)=15 Omega, R_(2) = 3 Omega, R_(3) =4 Omega`
Effective resistance `R_(s) =R_(1)+R_(2)+R_(3)=15+3+4=22 Omega`
`therefore` The effective resistance in the circuit `=22 Omega`