(a) Explain about non-linear resistors with some examples and illustration on how they differ from linear resistor. (6)

(b) A Diode half-wave rectifier supplies a resistive load of 100Ω from a 100V AC R.M.S. voltage source. The diode is a resistance of 5Ω during conduction state. (10)

Calculate

(i) The DC output voltage

(ii) DC average load current.