Question

Four silicon diodes and a 10 Ω resistor are connected as shown in the figure below. Each diode has a resistance of 1 Ω. Find the current flows through the 10 Ω resistor.

Answer 1

Current flow through D₁ and D₃ = 2 Ω

Current flow through D₂ and D₄ = 2 Ω

These two are in parallel so

Net resistants = `1/2 + 1/2` = 1 Ω

Total Resistance = 1 Ω + 18 Ω = 19 Ω

V = 2.5 Ω

I = `"V"/"R" = 2.5/19`

I = 0.13 A