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Basic Electricity

Total questions: 20

Worksheet time: 7mins

Name
Class
Date
1.

A form of electricity where the flow of current is always in the same direction.

a)

Voltage

b)

AC

c)

Power

d)

DC

2.

The force that opposes and reduces the flow of electrical current is organized as ___

a)

Power

b)

Electromagnetism

c)

Resistance

d)

Frequency

3.

A part of an electric circuit which converts electrical energy into another form of energy to do work is _____

a)

Load

b)

Circuit

c)

Source

d)

Control

4.

A part of of an electrical circuit, consists of batteries, generator or a main electrical power which supplies electricity is called ____

a)

Control

b)

Load

c)

Source

d)

Voltage

5.

A law that states that current is directly proportional to voltage and inversely proportional to resistance in known as ____

a)

PEC

b)

Kirchoff's Law

c)

Law of Resistivity

d)

Ohm's Law

6.

In Ohm's Law, to find the unknown voltage in the circuit, the formula to be used is :

a)

E=IxR

b)

I=E/R

c)

E=I/R

d)

R=E/I

7.

What amount of current does a 40-watt fluorescent lamp draw from a 220 volts power source?

a)

5.5 amperes

b)

25.5 amperes

c)

0.18 amperes

d)

50.5 amperes

8.

There are several factors involved in electrical wiring installation but the foremost consideration is ____

a)

Cost

b)

Labor

c)

Safety

d)

Function

9.

The standard number or diameter of wires for convenience outlet layout should be ?

a)

12

b)

14

c)

18

d)

10

10.

To comply with the requirements of the Philippine Electrical Code, the appropriate fuse rating for lighting outlet should be ____

a)

15 A

b)

60 A

c)

30 A

d)

20 A

11.

Planning and designing of electrical wiring plan is being done in order to:

a)

Provide efficient and effective wiring system of the building

b)

Maintain quality workmanship

c)

Avoid overloaded circuit

d)

Protect the circuit from high current

12.

Circuit breakers are used to protect household electrical circuits. What is the ampacity rating of the breaker used for convenience outlets or general purpose circuits?

a)

20A

b)

15A

c)

30A

d)

60A

13.

An electrical component used to control electrical circuit, in two different locations is called :

a)

Four-way switch

b)

Push-button switch

c)

Three-way switch

d)

Remote controlled switch

14.

To conserve energy, what kind of lamp should be used in lighting fixtures ?

a)

Incandescent lamp

b)

Compact fluorescent lamp

c)

Mercury Lamp

d)

Neon Lamp

15.

The size of electrical wire recommended for installing lighting fixtures is :

a)

No. 12 AWG

b)

No. 18 AWG

c)

No. 10 AWG

d)

No. 14 AWG

16.

What is the voltage required by an automatic pressure cooker having a resistance of 20 ohms when the current flowing in 8 amperes?

a)

240 V

b)

120 V

c)

480 V

d)

160 V

17.

In a simple electrical connection, one of the lines of the source is connected to ____

a)

Terminal 1 of the load

b)

Terminal 2 of the load

c)

Terminal 1 of the switch

d)

Terminal 1 and 2 of the switch

18.

A series connected dry cells will result to _____

a)

increase in the amount of current

b)

increase in the amount of voltage

c)

increase total resistance

d)

more powerful supply of electricity

19.

What type of switch is used to control alternately three-phase line system using two sources of power?

a)

Double Pole Single Throw Switch

b)

Single Pole Double Throw

c)

Triple Pole Single Throw Switch

d)

Triple Pole Double Throw Switch

20.

Which of the following is the best conductor of electricity?

a)

Copper

b)

Silver

c)

Aluminum

d)

Gold