A triode valve operates at `V_p = 225 V and V_g = - 0.5 V`. The plate current remains unchanged if the plate voltage is increased to `250 V` and the grid voltage is decreased to `-2.5 V`. Calculate the amplification factor.

Explanation

Amplification factor for Triode Valve
` mu = Charge in Plate Voltage/ Charge in Grid Voltage `
` = (delta V_p) /(delta V_g) = ((250-225)/(2.5 -0.5))`
` = 25/2 = 12.5 [ :. omegaV_p = 250-225 omega V_g = 2.5 xx 0.5]` .