Question

Why collector current is high than emmiter current in transistor?

Answer 1

No. The only problem is as one reduces collector current, the current gain become pretty low.

At high collector currents exceeding 100mA also the current gain reduces. SO I would suggest : operate between 100uA and 20mA as collector current.

(this is a wee bit less than emitter current,..)

Answer 2

Why collector current is high than emmiter current in transistor?

ans. In most transistor, more than 95% of the emitter injected electrons flow to the collector, less than 5% fall into base holes and flow out the external base lead. But the collector current is less than emitter current. ... adc is known as large signal current gain or dc alpha. It is always positive.