Study Unit 1 - Intoduction To Electronics - Self-Check 1

Question 1

A special type of resistor that changes its resistance in response to temperature changes is called a _______.

Answer 1

Thermistor

Question 2

AC current can be converted to DC current by using a device called a _______.

Answer 2

Diode

Question 3

The opposition to current flow in a circuit is measured in units called _______.

Answer 3

Ohms

Question 4

One complete reversal of the AC current flow is called a _______.

Answer 4

Cycle

Question 5

A special type of diode that lights up when current flows through it is the _______.

Answer 5

Light-Emitting Diode (LED)

Question 6

Electrical pressure in a circuit is measured in units called _______.

Answer 6

Volts

Question 7

One metal that’s frequently used to make electrical wires because it’s such a good conductor
is _______.

Answer 7

Copper

Question 8

The two ends of a diode are called the _______ and the _______.

Answer 8

Anode, Cathode

Question 9

The frequency of AC current is measured in units called _______.

Answer 9

Hertz

Question 10

True or False?

The internal circuits in most electronic equipment operate on AC current.

Answer 10

False

Question 11

True or False?

A high-resistance device will allow less current to pass through it than a low-resistance device.

Answer 11

True

Question 12

True or False?

Sensors are used to convert a measured physical quantity into an electrical signal.

Answer 12

True

Question 13

True or False?

Printed circuit boards are used to connect components in modern electronic equipment.

Answer 13

True

Question 14

The flow of electrons in a circuit is measured in units called _______.

Answer 14

Amperes