Question

The diagram below shows an electric circuit in which some of the quantities are represented by numbers,other by letters.

Calculate the values of x and r

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Answer 1

Step-by-step explanation:

The total current 5.2 A splits into 3.2 amps and x = 2 amps ( total 5.2 A)

The resistors cause this current split

the smaller resistor has a larger current BUT the VOLTAGE drop across each is the same

3.2 A * 4 Ω = 2 A * r

3.2 *4 / 2 = r = 6.4 Ω