For the circuit given below find equivalent resistance:
Correct answer: 2. 10 ohms
Solution:
Firstly name label one terminal of each resistor and head and tail, and by carefully observing one can understand the circuit is a simple parallel resistor circuit. See below.
Now
from parallel resistors formula:
Req = 1/((1/R1) + (1/R2) + (1/R3))
Req = 10 ohms