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Worksheets

peeoon

Total questions: 48

Worksheet time: 26mins

Name
Class
Date
1.

What are the tools shown?

a)

Wire cutters

b)

Pliers

c)

Scissors

d)

Shears

2.

which soldering tool is shown in the picture?

a)

soldering iron

b)

solder wire

c)

de soldering pump

d)

soldering iron stand

3.

What is this?

a)

soldering iron

b)

solder

c)

chip wick

d)

flux

4.

What tool is shown here?

a)

Wire nut Pliers

b)

Crimper

c)

Wire Striper

d)

Spring loaded wire comb

5.

Tool used in twisting and bending copper wire

a)

side cutting pliers

b)

long nose pliers

c)

tweezer

d)

screw driver

6.

Identify this electronic testing tool

a)

GPS Tracker

b)

Jump Wire

c)

Multimeter

d)

Breadboard

7.

Select the picture that shows a prefect soldering.

a)
b)
c)
d)
8.

What does AWG stand for?

a)

A Woman's Guide

b)

Average Wire Grade

c)

American Wire Gauge

d)

All World Gauge

9.

The item shown is called?

a)

Veroboard

b)

Veraboard

c)

Feroboard

d)

Beroboard

10.

Which joint is a good one?

a)

The one on the left

b)

The one on the right

c)

Neither

d)

Both

11.

PCB stands for...

a)

Portable Circuit Board

b)

Printed Carbon Board

c)

Printed Circuit Build

d)

Printed Circuit Board

12.

David is working on a science project and he uses a multimeter. He sees the symbol 'Ω' on the multimeter display. What does this symbol represent?

a)

Voltage

b)

Current

c)

Resistance

d)

Frequency

13.
What is this called? 
a)
Jumper wires
b)
Circuit
c)
Battery leads
d)
Breadboard
14.

In this circuit, what components (s) will light up?

a)

the battery

b)

the blue wires

c)

the LEDs

15.
A tool that measures voltage, current, resistance, and continuity is called a:
a)
voltmeter
b)
resistor
c)
multimeter
d)
screwdriver
16.

Damaged power cords can cause__________

a)

A. fires

b)

B. electrocution

c)

None

d)

Both A and

B are correct

17.

Why is overloading an outlet not allowed?

a)

It will make people stumble and hurt.

b)

It creates the risk of wire overheating and starting a fire.

c)

It makes the house messy.

d)

It incurs huge electricity bills from too much energy.

18.

Variable Resistor

a)
b)
c)
d)
19.
a)
b)
c)
d)
20.

a)

LED

b)

LDR

c)

Diode

d)

Resistor

21.

Name this electrical component

a)

Capacitor

b)

Fixed Resistor

c)

Potentiometer

d)

Transistor

22.

What is this symbol called?

a)

A. Bulb

b)

B. Resistor

c)

C. Battery

d)

D. Voltage

23.
Which leg of the LED is the positive side? 
a)
The longer one
b)
The shorter one
c)
There is no positive side
d)
They are both positive, I'm positive of it. 
24.

What are the names of the terminals X, Y and Z?

a)

X = Base, Y = Collector, Z = Emitter

b)

X = Emitter, Y = Base, Z = Collector

c)

X = Collector, Y = Base, Z = Emitter

d)

X = Collector, Y = Emitter, Z = Base

25.

Which of the following is the correct transistor circuit symbol?

a)
b)
c)
d)
26.

Identify the pin number of leg A, B and C. (Give a space after each of your answer e.g If A is 0, B is 10, C is 7, type 0 10 7)

(a)  

27.

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

28.
What is the purpose of a resistor?
a)
control current flow
b)
allow current flow
c)
prevent current flow
d)
allow heat to build up
29.

Lily is working on a project that involves using a 4 band 47K ohm resistor. She needs to identify the colors on its first three bands. What colors should she look for?

a)

Yellow, Violet, White

b)

Yellow, Violet, Orange

c)

Red, White, Blue

d)

Orange, Yellow, Violet

30.
Color code for 10 Ω +/- 10%
a)
brown, black, brown, silver
b)
brown, black, brown, gold
c)
brown, black, black, gold
d)
brown, black, black, silver
31.

While working on a project, David is trying to identify the value of a resistor. He looks at the 1st band and sees the color yellow. What digit does this color denote on the resistor color band?

a)

3

b)

2

c)

4

d)

7

32.

Which of these colors is NOT used in the resistor value color code?

a)

White

b)

Black

c)

Violet

d)

Pink

33.

What kind of logic gate is this?

a)

OR

b)

AND

c)

NAND

d)

NOR

34.

What kind of logic gates is used in half adder?

a)

NOT gate and AND gate

b)

AND gate and OR gate

c)

XOR gate and AND gate

d)

XNOR and AND gate

35.

Which of the following is truth table for NAND gate?

a)
b)
c)
d)
36.

 

How many different combinations of 1 and 0 are possible with 2 bits?

a)

1

b)

2

c)

3

d)

4

37.

How many different combinations of 1 and 0 are possible with 3 bits?

a)

4

b)

5

c)

6

d)

7

e)

8

38.

A=1

B=0

What is the value of Z?

a)

1

b)

0

39.

A 6.0-ohm lamp requires 0.25 ampere of current to operate. In which circuit below would the lamp operate correctly when switch S is closed?

a)
b)
c)
d)
40.

The diagram below represents an electric circuit consisting of four resistors and a 12-volt battery.

What is the equivalent resistance of the circuit shown?

a)

72 ohms

b)

3.0 ohms

c)

0.33 ohms

d)

18 ohms

41.

The circuit diagram above represents four resistors connected to a 12-volt source. What is the total current in the circuit?

a)

2.0 A

b)

0.50 A

c)

24 A

d)

8.6 A

42.
The current going through the 45 ohm resistor is 
a)
0.05 amps
b)
0.2 amps
c)
0.1 amps
d)
5 amps
43.

Determine the values of I1

(a)  

44.

What is the effective resistance of the four resistors in the circuit shown below?

a)

0.25 Ω

b)

4 Ω

c)

6 Ω

d)

18 Ω

45.

Which of the formula represent effective resistcance in parellel?

a)

1/Reff = 1/R1 + 1/R2 + ...

b)

Reff = R1 + R2 + ...

c)

1/Reff = 1/R1 = 1/R2 = ...

d)

Reff = R1 = R2 = ...

46.

What is the effective resistance of the three resistors in the circuit shown below?

a)

0.3 Ω

b)

1.1 Ω

c)

3 Ω

d)

12 Ω

47.
As the number of resistors increase, the total resistance ___________ and the total current ____________
a)
Increase, decrease
b)
Decrease, increase
c)
Increase, increase
d)
Decrease, decrease
48.
DC stands for ____ and is used in batteries.
a)
Distant Current
b)
Don't Current
c)
Direct Current
d)
Distributed current

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