Concepts Of Physics MCQ Edition [Volume 2]PhysicsSemiconductors and Semiconductor Devices

If the base current of a transistor is altered from 30 A to 80 A , its collector current shifts from 1.0 mA to 3.5 mA . Determine the current gain .

Options

A20
B50
C500
D0.05

Correct answer

B. 50

Step-by-step solution

The change in base current is given by I_B = 80 A - 30 A = 50 A . The change in collector current is given by I_C = 3.5 mA - 1.0 mA = 2.5 mA = 2500 A . The AC current gain of the transistor is defined as = I_C I_B . Substituting the values, we get = 2500 A 50 A = 50 .

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