A parallel combination of three resistors takes a current of 5 A from a 20 V supply. If the resistors are of `10 Omega and 8 Omega` find the value of the third resistor.

Explanation

To find the value of the third resistor in a parallel combination of three resistors, we can follow these steps:

### Step 1: Understand the given information
We have a parallel combination of three resistors (R1, R2, and R3) connected to a 20 V power supply, and the total current flowing through the circuit is 5 A. The values of R1 and R2 are given as 10 Ω and 8 Ω, respectively.

### Step 2: Calculate the equivalent resistance (R_eq)
Using Ohm's Law, we can find the equivalent resistance of the circuit. Ohm's Law states that:
\[ V = I \times R \]
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