semiconductor diodes

Question 1

semiconductors are neither

Answer 1

conductors or insulators

Question 2

the resistance of a semiconductor is

Answer 2

lower than the resistance of insulators and higher than the resistance of conductors

Question 3

silicon is a semiconductor. it has 4 outer electrons. it forms a

Answer 3

stable crystal

Question 4

pure silicon crystals are

Answer 4

insulators

Question 5

in p-type silicon, the charge carriers are

Answer 5

holes

Question 6

in p-type silicon, the holes move towards the

Answer 6

negative terminal

Question 7

in n-type silicon, the charge carriers are

Answer 7

free electrons

Question 8

in n-type silicon, the free electrons move towards the

Answer 8

positive terminal

Question 9

to make p-type silicon, crystals are seeded with

Answer 9

aluminium atoms that have 3 outer electrons

Question 10

to make n-type silicon, crystals are seeded with

Answer 10

phosphorus atoms that have 5 outer electrons

Question 11

a diode is

Answer 11

a device that allows electrons to flow in 1 direction only

Question 12

a p-n junction is a

Answer 12

diode

Question 13

the arrow in the symbol for a diode points from

Answer 13

p-type to n-type

Question 14

to make a diode conduct, you connect the

Answer 14

p-type to the postive and the n-type to the negative

Question 15

in the arrow for the symbol of a diode, electrons flow in

Answer 15

the opposite direction to the arrow