First we calculate the equivalent value of the parallel resistors
(30 × 60) ÷ (30 + 60) = 20
So now have 4 and 20 in series which is 24
So total current is 12 ÷ 24 = 0.5A = 500 mA
The current divides between the parallel resistors (next slide)
First we calculate the equivalent value of the parallel resistors
(30 × 60) ÷ (30 + 60) = 20
So now have 4 and 20 in series which is 24
So total current is 12 ÷ 24 = 0.5A = 500 mA
The current divides between the parallel resistors (next slide)