ac
alternating current
alternative
alternator
background
black border
buttons
c
circuit
color
connect
contact
current
dc
electric
electric circuit
electrical
energy
energy saving
equipment
expensive
fan
finger
hand
light
metal
metallic
nail
off
on
outlet
plug
power
push
pushing
save
side view
socket
start
supply
switch
switch on
switched
switches
turn
two
voltage
volts
wall
white background