please solve 7,8,9,10 questions
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7- all are done by electric energy
8-a) false
b) false
c) true
d) true
e) false
f) true
9)a- amphere
b- watt
c- volt
d- joule
8-a) false
b) false
c) true
d) true
e) false
f) true
9)a- amphere
b- watt
c- volt
d- joule
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