Module 1

Question 1

Voltage source

Answer 1

Creates a fixed difference in electrical potential between two points

Question 2

Resistor

Answer 2

Component with a specified resistance intended to reduce current

Question 3

Kirchoff’s Voltage law

Answer 3

Vector sum of all voltages in one direction around a closed loop is zero

Question 4

Kircoff Current Law

Answer 4

Vector sum of all currents entering and leaving a junction i zero

Question 5

Transducer

Answer 5

Converts a physical quantity into an electrical signal. Can be used as part of a sensor

Question 6

LDR

Answer 6

Resistance changes when exposed to light

Question 7

Thermistor

Answer 7

Resistance changes in response to temperature

Question 8

Strain gauge

Answer 8

Resistance increases when stretched and decreases when compressed. Used to sense mechanical strain