Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

A P-N transistor is used in common - emitter mode in an amplifier circuit. A change of 40μA in the base current brings a change of 2mA in collector current and 0.04V in base  -emitter  voltage, Find (i) input resistance (ii) current amplification factor β. If a load resistance of 6 k oh m is used, then find voltage gain?
Asked by Topperlearning User | 10 Jul, 2014, 10:25: AM
answered-by-expert Expert Answer

 

ΔIB = 40μA 40 x 10-6 A

ΔIC = 2mA = 2 x 10-3A

ΔVBE 0.04V

RL = 6kΩ = 6 x 103Ω

(i) Rin = Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '.

(ii) β = Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '.

voltage - gain = β Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '.

 

Answered by | 10 Jul, 2014, 12:25: PM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 12-science - Physics
How do we bias the junctions of a transistor in common emitter configuration?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
What are Transistors?
Asked by Topperlearning User | 23 Jun, 2014, 11:08: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
A P-N transistor is used in common - emitter mode in an amplifier circuit. A change of 40μA in the base current brings a change of 2mA in collector current and 0.04V in base  -emitter  voltage, Find (i) input resistance (ii) current amplification factor β. If a load resistance of 6 k oh m is used, then find voltage gain?
Asked by Topperlearning User | 10 Jul, 2014, 10:25: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Draw a labeled circuit diagram of a common emitter transistor amplifier. Draw its input and the output characteristics. .
Asked by Topperlearning User | 23 Jun, 2014, 02:16: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
A transistor has a current gain of 30. If the collector resistance is 6kΩ, input resistance is 1kΩ, calculate its voltage gain?
Asked by Topperlearning User | 14 Nov, 2014, 07:38: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
The input resistance of a silicon transistor is Ω Its base current is changed by 15μ A, which results in the change in collector current by 2mA. This transistor is used as a common emitter amplifier with a load resistance of 5k Ω. Calculate current gain (βac) transconductance and voltage gain.
Asked by Topperlearning User | 10 Jul, 2014, 11:09: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
The base of a transistor is lightly doped. Explain why?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
In the given figure, is (i) The emitter (ii) collector forward or reverse biased? Justify.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Define current amplification factor in a common  emitter mode of transistor?
Asked by Topperlearning User | 23 Jun, 2014, 02:11: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Calculate emitter current for which β = 100 IB = 20μA?
Asked by Topperlearning User | 10 Jul, 2014, 01:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×