A common emitter amplifier gives an output of 3V for an input of 0.01 V . If `beta` of the transistor is 100 and the input resistance is `kOmega` , then the collector resistance is

Options

A. A)`1KOmega`
B. B)`3kOmega`
C. C)`30kOmega`
D. D)`30Omega`

Answer

B

Explanation

In common emitter amplifier Voltage gain = current gain `xx` resistance gain
or `A_(v)=betaxx(R_(o))/(R_(i))`
or `(V_(o))/(V_(i))=beta(R_(o))/(R_(i))`
or `(3)/(0.01)=100xx(R_(o))/(1xx10^(3))``orR_(o)=(30)/(0.01)=3kOmega`