Question

the potential difference between the terminals of an electric heater is 60 volt when it draws a current by 4 ampere from the source what current will the heater draw of the potential difference increased to 12 volt

Answer 1

First,V=60 V,I=4A
R=V/I=60V/4=15Ohm
When Potential difference is increased to 120 V
I=V/R=120/15=8A.
Hope it will help u.

Answer 2

$\huge\mathfrak\pink{Answer}$

ᴩᴏᴛᴇɴᴛɪᴀʟ ᴅɪꜰꜰᴇʀᴇɴᴄᴇ = 60

ᴄᴜʀʀᴇɴᴛ = 4ᴀ

ʀ=ᴠ/ɪ

= 60/4

= 15 ᴏʜᴍ

ᴡʜᴇɴ ᴛʜᴇ ᴩᴏᴛᴇɴᴛɪᴀʟ ᴅɪꜰꜰᴇʀᴇɴᴄᴇ ɪꜱ ɪɴᴄʀᴇᴀꜱᴇᴅ ᴛᴏ 12ᴠ, ᴛʜᴇ ᴄᴜʀʀᴇɴᴛ ᴅʀᴀᴡɴ ʙy ᴛʜᴇ ʜᴇᴀᴛᴇʀ ᴡɪʟʟ ʙᴇ:

ɪ=ᴠ/ʀ

= 12/15

= 0.8ᴀ

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