Warning: Undefined array key 1 in /home/acaproso/public_html/._System/._Template/.Main.php on line 116
Electronics questions

Electronics questions | form four Physics

Find Electronics examination questions, form four Physics in acaproso.com

# Question
1

Figure 2 shows the arrangement of three capacitors.

Electronics form four physics

What will be the value of equivalent capacitance across two terminals QR?

  1. 1.95 μF
  2. 1.05 μF 
  3. 1.85 μF
  4. 1.59 μF 
  5. 1.15 μF.

Multiple choices
2

Which category of the material whose electrical conductance lie between an insulator and a conductor?


Short answers
3

Distinguish between:
(i) donor and acceptor atoms.
(ii) n-type and p-type semiconductors.


Short answers
4

A P-N junction diode acts as a rectifier when it
A converts a.c. to d.c.
B converts d.c. to a.c.
C improves the amplitude of the input a.c. signals
D improves the amplitude of the input d.c. signals
E amplifies a.c. signals.


Multiple choices
5

Describe the construction and mode of action of the PN junction semiconductor.


Short answers
6

When silicon element is doped with phosphorus atoms, it produces

  1. a p-type semiconductor
  2. a p-n junction diode
  3. an intrinsic semiconductor
  4. a bipolar semiconductor
  5. an n-type semiconductor.

Multiple choices
7

When a p-type and n-type semiconductors are bounded together they form a single crystal called ……..


Fill in blanks
8

Transistor is a three terminal device that is used to amplify the strength of weak signals.Draw the NPN transistor circuit connctions with four terminals in the following modes: common Base (CB), Common Emitter (CE) and Common Collector (CC) indicating the input and output circuits.


Short answers