Question

Solve the attached one plzz​

Answer 1

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★GIVEN :

• Tʜᴇ ᴘᴏᴡᴇʀ ᴏғ ᴀɴ ᴇʟᴇᴄᴛʀɪᴄ ʙᴜʟʙ ɪs 60W .

• Tʜᴇ ᴇʟᴇᴄᴛʀɪᴄ ʙᴜʟʙ ɪs ᴜsᴇᴅ ғᴏʀ 6ʜrs ᴘᴇʀ ᴅᴀʏ .

★TO FIND :

• Tʜᴇ ᴜɴɪᴛ ᴏғ ᴇɴᴇʀɢʏ ᴄᴏɴsᴜᴍᴇᴅ ɪɴ ᴏɴᴇ ᴅᴀʏ ʙʏ ᴛʜᴇ ʙᴜʟʙ .

★SOLUTION :

$\huge\red\star$ $\bf\purple{Energy\:=\:Power\times{Time}\:}$

ᴡʜᴇʀᴇ,

ᴘᴏᴡᴇʀ = 60W = 60/1000 = 0.06 KW

Tɪᴍᴇ = 6 ʜrs

➳ Eɴᴇʀɢʏ = 0.06 × 6

➳ Eɴᴇʀɢʏ = 0.36 KW.h

➳ Eɴᴇʀɢʏ = 0.36 units

$\huge\red\therefore$ Tʜᴇ ᴜɴɪᴛ ᴏғ ᴇɴᴇʀɢʏ ᴄᴏɴsᴜᴍᴇᴅ ɪɴ ᴏɴᴇ ᴅᴀʏ ʙʏ ᴛʜᴇ ʙᴜʟʙ ɪs "0.36 ᴜɴɪᴛs" .

___________________________

ɪᴍᴘᴏʀᴛᴀɴᴛ ᴘᴏɪɴᴛs :-

$\huge\green\bullet$ 1 ᴋɪʟᴏᴡᴀᴛᴛ.ʜᴏᴜʀ (KW.h) ɪs ᴄᴏᴍᴍᴇʀᴄɪᴀʟ ᴜɴɪᴛ ᴏғ ᴇʟᴇᴄᴛʀɪᴄᴀʟ ᴇɴᴇʀɢʏ .

$\huge\green\bullet$ Iᴛ ɪs ᴀʟsᴏ ᴅᴇғɪɴᴇᴅ ᴀs "1 ᴜɴɪᴛ" .

$\huge\green\bullet$ Eʟᴇᴄᴛʀɪᴄɪᴛʏ ʙɪʟʟs ᴀʀᴇ ᴄᴀʟᴄᴜʟᴀᴛᴇᴅ ɪɴ ᴛʜᴇ ᴜɴɪᴛs ᴏғ ᴇɴᴇʀɢʏ ᴄᴏɴsᴜᴍᴇᴅ .

$\huge\green\bullet$ Sᴏ, ᴛʜᴇ kilowatt-hour ɪs ᴄᴏᴍᴍᴏɴʟʏ ᴜsᴇᴅ ᴀs ᴀ ʙɪʟʟɪɴɢ ᴜɴɪᴛ ғᴏʀ ᴇɴᴇʀɢʏ ᴅᴇʟɪᴠᴇʀᴇᴅ ᴛᴏ ᴄᴏɴsᴜᴍᴇʀs ʙʏ ᴇʟᴇᴄᴛʀɪᴄ ᴜᴛɪʟɪᴛɪᴇs .

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Answer 2

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★GIVEN :

Tʜᴇ ᴘᴏᴡᴇʀ ᴏғ ᴀɴ ᴇʟᴇᴄᴛʀɪᴄ ʙᴜʟʙ ɪs 60W .

Tʜᴇ ᴇʟᴇᴄᴛʀɪᴄ ʙᴜʟʙ ɪs ᴜsᴇᴅ ғᴏʀ 6ʜrs ᴘᴇʀ ᴅᴀʏ .

★TO FIND :

Tʜᴇ ᴜɴɪᴛ ᴏғ ᴇɴᴇʀɢʏ ᴄᴏɴsᴜᴍᴇᴅ ɪɴ ᴏɴᴇ ᴅᴀʏ ʙʏ ᴛʜᴇ ʙᴜʟʙ .

★SOLUTION :

$\huge\red\star$ $\bf\purple{Energy\:=\:Power\times{Time}\:}$

ᴡʜᴇʀᴇ,

ᴘᴏᴡᴇʀ = 60W = 60/1000 = 0.06 KW

Tɪᴍᴇ = 6 ʜrs

➳ Eɴᴇʀɢʏ = 0.06 × 6

➳ Eɴᴇʀɢʏ = 0.36 KW.h

➳ Eɴᴇʀɢʏ = 0.36 units

$\huge\red\therefore$∴ Tʜᴇ ᴜɴɪᴛ ᴏғ ᴇɴᴇʀɢʏ ᴄᴏɴsᴜᴍᴇᴅ ɪɴ ᴏɴᴇ ᴅᴀʏ ʙʏ ᴛʜᴇ ʙᴜʟʙ ɪs "0.36 ᴜɴɪᴛs" .

___________________________

ɪᴍᴘᴏʀᴛᴀɴᴛ ᴘᴏɪɴᴛs :-

$\huge\green\bullet$ 1 ᴋɪʟᴏᴡᴀᴛᴛ.ʜᴏᴜʀ (KW.h) ɪs ᴄᴏᴍᴍᴇʀᴄɪᴀʟ ᴜɴɪᴛ ᴏғ ᴇʟᴇᴄᴛʀɪᴄᴀʟ ᴇɴᴇʀɢʏ .

$\huge\green\bullet$ Iᴛ ɪs ᴀʟsᴏ ᴅᴇғɪɴᴇᴅ ᴀs "1 ᴜɴɪᴛ" .

$\huge\green\bullet$ Eʟᴇᴄᴛʀɪᴄɪᴛʏ ʙɪʟʟs ᴀʀᴇ ᴄᴀʟᴄᴜʟᴀᴛᴇᴅ ɪɴ ᴛʜᴇ ᴜɴɪᴛs ᴏғ ᴇɴᴇʀɢʏ ᴄᴏɴsᴜᴍᴇᴅ .

$\huge\green\bullet$ Sᴏ, ᴛʜᴇ kilowatt-hour ɪs ᴄᴏᴍᴍᴏɴʟʏ ᴜsᴇᴅ ᴀs ᴀ ʙɪʟʟɪɴɢ ᴜɴɪᴛ ғᴏʀ ᴇɴᴇʀɢʏ ᴅᴇʟɪᴠᴇʀᴇᴅ ᴛᴏ ᴄᴏɴsᴜᴍᴇʀs ʙʏ ᴇʟᴇᴄᴛʀɪᴄ ᴜᴛɪʟɪᴛɪᴇs .

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