Question

A current of 1 ampere flows in series circuit having an electric lamp and a conductor of 5 ohm when connected to a 10 volt battery calculate the resistance of the electric lamp

Answer 1

And: 5 ohms.. For solution see attached file

Answer 2

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$\huge\fcolorbox{black}{aqua}{Solution:-}$

✒ ᴀɴsᴡᴇʀ:-

⛄ 5 Ω

✒ ᴇxᴘʟᴀɴᴀᴛɪᴏɴ:-

⛄ ʟᴇᴛ ᴛʜᴇ ʀᴇsɪsᴛᴀɴᴄᴇ ᴏғ ᴛʜᴇ ʟᴀᴍᴘ = ʀ1

ʀᴇsɪsᴛᴀɴᴄᴇ ᴏғ ᴄᴏɴᴅᴜᴄᴛᴏʀ = ʀ2 = 5

ᴛᴏᴛᴀʟ ʀᴇsɪsᴛᴀɴᴄᴇ ɪɴ sᴇʀɪᴇs, ʀs = ʀ1 + ʀ2 = ʀ1 + 5

ᴄᴜʀʀᴇɴᴛ, ɪ = 1 ᴀ, ᴠᴏʟᴛᴀɢᴇ, ᴠ = 10 ᴠ

ғʀᴏᴍ ᴏʜᴍ's ʟᴀᴡ, ᴠ = ɪʀ

=> 10 = 1 (ʀ1 + 5)

=> ʀ1 = 5 Ω

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