Unit 4 - Topic 2

Question 1

Four basic elements of circuits

Answer 1

Source
Conductor
Load
Control

Question 2

Source

Answer 2

Source of electrical energy

Question 3

Conductor

Answer 3

Wire through which current flows

Question 4

Load

Answer 4

Items along circuit converting electricity into other forms

Question 5

Control

Answer 5

Switch or device turning circuit or devices along it on or off

Question 6

Battery

Answer 6

Combination of cells

Question 7

Switch

Answer 7

Used to «open» or «close» circuit to control current through it

Question 8

Resistor symbol

Answer 8

Used to represent tone of many dif loads

Question 9

Criteria for drawing circuit

Answer 9

Draw w/ pencil and ruler on graph paper or unlined paper
Rectangular/square arrangement
Conductors w/ right-angled or square corners
Arrange so conductors not crossing
Neat and consistent symbol size

Question 10

———

Answer 10

Conducting wire

Question 11

+ | -
———| |———
|

Answer 11

Cell

Question 12

+ | | | -
———| | | | | |———
| | |

Answer 12

Battery

Question 13

———\/\/\/\/\———

Answer 13

Resistor

Question 14

_____./ ._____

Answer 14

Switch

Question 15

———(^^)———

Answer 15

Lamp

Question 16

Circuit symbols

Answer 16

Similar to words and make communication quick and accurate

Question 17

Current

Answer 17

Amount of charge that passes a pint in a conducting wire every second
Sym. I

Question 18

Amperes, milliamperes

Answer 18

Measurement unit for electric current

Sym. A or mA

Question 19

Galvanometer

Answer 19

Used to measure weak electric currents

Sym. G

Question 20

Ammeter or milliammeter

Answer 20

Used to measure larger currents

Sym. A or mA