A340 0hm resistor and a 550 ohm resistor are connected in parallel. this group is then connected in series with a 180 ohm and a 120 ohm resistor. what is the equivalent resistance of the circuit?

Calculate parallel connected resistors:

Rv=1/(1/340 + 1/550)=
210.11 ohm

Now just sum up all resistors

Rt= 210.11+180+120=
510.11 ohm.

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