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The small amount of current which flows even when base current IB=0 is called_________

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The small amount of current which flows even when base current IB=0 is called_________

(a) IBEO

(b) ICBO

(c) ICEO

(d) IC

This question was posed to me in my homework.

My question is from The CE Characteristics topic in section Transistor Characteristics of Electronic Devices & Circuits

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The correct choice is (c) ICEO

To explain I would say: In the cut off region, a small amount of collector current flows even when base current IB is zero. This is called ICEO. Since the main current is also zero, the transistor is said to be cut off.

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