Question

How many units of electricity will be consumed if you use a 60 watt electric bulb for 5 hours everyday for 30 days ?; 1) 12; 2) 9; 3) 6; 4) 3

Answer 1

1 kwh = 1000 W

Bulb Rating =60 W = .06 kW

Bulb illuminates for = 5hrs/day

Bulb consumes units( kWH)/day= .06×5= = .3 units/ day
so in 30 days it will consume=.3×30=[9 units]


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Answer 2

$\underline{\textbf{Hey Mate Here Is Your Answer }}$

$\underline{\textbf{Question}}$

We Need To Find How many units of electricity will be consumed if you use a 60 watt electric bulb for 5 hours everyday for 30 days ?

So Now Lets Move For Solution $\longrightarrow$

$\underline{\textbf{Solution}}$

So According To Question It's Said That ...

$\textbf{The Power Of Bulb = 60 watt}$

$\textbf{Amount Of Hours ,The Bulb Is Used In One Day = 5 Hours }$

$\textbf{No. Of days The Bulb Is Used = 30Days }$

Now We Know That

$\boxed{\mathbf{Electricity\: Consumed \:= \:Power\: (In \:Kilowatt ) \: consumed \times\:Number\: Of\: \\ \:Hours \: Used }}$

That Is

$\boxed{\mathbf{Unit \: Of \: Electricity \: = kWh}}$

Now

$\mathbf{Number\:Of\:Hours\:The:Bulb\:Used\: Is\:= \: 5Hr \times \:30 \:Days}$

That Is $\longrightarrow$

$\mathbf{Amount\: Of \: Time\:Used \: = \: 150hr \:}$

Now $\longrightarrow$

$\mathbf{Power\: Of \: Bulb \: = 60watt}$

Now We Know That $\longrightarrow$

$\boxed{\mathbf{ 1\: Unit \:Of\: Power \:=\: 1kwh\: ( \:1 \:Kilo \:watt\: Hour \:) }}$

And

$\boxed{\mathbf{1 \:KiloWatt \:= \:1000watts }}$

Therefore

$\mathbf{Unit\: Of \: Power\: Used\: =\: 60/1000\: \times 150hr}$

That Is $\longrightarrow$

$\mathbf{Units\:Of\: Electricity\:Consumed\:=0.06Kw \:\times\: 150hr}$

$\boxed{\mathbf{Electricity \: Consumed \: = \:9 kWh\: Or \:9 \:Units }}$

$\underline{\textbf{Hence The Required Answer Is}}$

$\boxed{\boxed{\large{\mathbf{9 Units}}}}$

$\underline{\large{\blue{\mathfrak{Be\:Brainly..}}}}$