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To find the maximum value of gate current (( I_g )) for the safe operation of an SCR, we can use the formula for power dissipation, which is given by:
[
P = V_g cdot I_g
]
where ( P ) is the power dissipation (0.5 Watts) and ( V_g ) is the voltage applied to the gate (10 V).
Rearranging the formula to solve for ( I_g ):
[
I_g = frac{P}{V_g}
]
Substituting the given values:
[
I_g = frac{0.5 text{ Watts}}{10 text{ V}} = 0.05 text{ A}
]
Thus, the maximum value of current ( I_g ) for safe operation is 0.05 A or 50 mA.