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Worksheets

Electronics

Total questions: 10

Worksheet time: 6mins

Name
Class
Date
1.

Zener diode acts as a

a)

rectifier

b)

voltage regulator

c)

potentiometer

d)

galvanometer

2.

Identify the electronic symbol.

a)

Diode

b)

Photodiode

c)

Reflective diode

d)

Light Emitting Diode

3.
Current is measured in:
a)
Ohms
b)
Voltage
c)
Amperes
d)
Watts
4.

What electronic component allows current to flow in one direction only?

a)

Resistor

b)

LED

c)

Diode

d)

Switch

5.
What is the tolerance for a Green, Red, Black, Gold resistor?
a)
1%
b)
20%
c)
5%
d)
10%
6.

Which of the following is the correct transistor circuit symbol?

a)
b)
c)
d)
7.

Doping is a process of adding a certain amount of specific impurities to semiconductor. What is the purpose of doping?

a)

To increase the resistance of semiconductor

b)

To increase the thermal energy of semiconductor

c)

To increase the temperature of the semiconductor

d)

To increase the conductivity of the semiconductor

8.

What is the function of a diode?

a)

Acts as a current amplifier

b)

Acts as an automatic switch

c)

Stores electric charge

d)

Allows the current to pass in one direction only

9.

What is this?

a)

Television

b)

Pot?

c)

LDR

d)

Resistor?

10.

what is an oscillator?

a)

an amplifier

b)

a power supply

c)

a multimeter

d)

a signal generator