Question

A voltage of 12 V is applied across a circuit with one 3 0hm resistor in series and three 3 Ohm resistors in parallel. What is the total resistance in the circuit? Select one:a.1/3 Ohmsb.9 Ohmsc.3.33 Ohmsd.4 Ohms

Answer 1

d.

Step-by-step explanation

Let's draw the circuit first,

So, first, we have to solve the parallel,

`R_(parallel)=(1)/((1)/(R)+(1)/(R)+(1)/(R))=(1)/((1)/(3)+(1)/(3)+(1)/(3))=(1)/((3)/(3))=1\Omega`

The equivalent resistance is,

`R_(eq)=R_(parallel)+R=1\Omega+3\Omega=4\Omega`

Hence, the total resistance in the circuit is 4 Ohms.