1. Fill in the table

Noun	Verb	Adjective	Adverb	Translation	Transcription
		alternating
amplification		amplifying		усиление
anode
	apply
	attract
cathode
	compare (to, with)
circuit				схема
charge
conduction conductivity conductor semiconductor					(n) (v)
current AC(a.c.=alternating current) DC(d.c.=direct current)
development				разработка
device
diode
			directly
electrode
electron
	emit
flow
heat	heat
operator operation
patent					(n,v)
phenomenon (pl.- phenomena)				явление
	repel
rectifier
source
	switch (on/off)
tube
unit				блок, элемент
vacuum