Lights, batteries and resistors

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O R I N G L F S O H C U N V Q N V I L W F
C O J J A H I L H O S A E O U K S G T F X
D E M N C T T M W U X M D E P C A E W L X
W W V T J W P I C D H S O P F V P G J G I
X W I C J I U N X G C X I E T G Q D L W H
H W K V T Q R S R N G L D S U G Y G P V C
S K N M G S C O F M M V G N H Y I G I X S
E L O N R D D T X D M R N F Q E U T T A F
N T I L U H S P J O B E I M U A I B D O N
N K N O W E E H H A K V T U O R I C B V R
H R E D P A I R H H M D T A O S X X D K Q
U Q F I W J I Y H I D L I C Y J M D Y U W
V D S X D G U O F V G K M S A U D F T J Y
F G G I Q X J R L B H D E I R O X N T O L
M K H S H R J C O X L A T W E V F Y V P X
A C I C D B K O X D I G H W J V R O T W E
C W F W B Q G H M U G F G G M T X N E L D
Q I Y A N B Y M N C A A I Y F Y Y M V C D
B X W P W J B W S R Y F L Y Q I I Y T X L
J F R J N X X Y W C C C B S J C W J W G E
F X T E N A C A B K R V J H T Q Y O Y W T

Clues

  • A ______ is used in a wired network (6)
  • Batteries can last for days, months, or _____ (5)
  • How many small batteries are inside of the large battery? (3)
  • What does LED stand for? (5, 8, 5)

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