The applied sine voltage to SCR is Vm = 200 V and R = 10Ω.

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The applied sine voltage to SCR is V_m = 200 V and R = 10Ω. If gate trigger lags the ac supply by 120°, then average load current is

1. 10 A
  π
2. 5 A
  π
3. - 5 A
  π
4. - 15 A
  π

Correct Option: B

I_dc =	V_m	(1 + cos α)
	2π R

where α is trigger delay angle or firing angle.