Question

how many bulbs of resistence 6ohm should be joined in parallel to draw a current of 2amperes from a battery of 3 volts

Answer 1

нєяє ιѕ уσυяѕ αиѕωєя;

∆ sᴜᴘᴘᴏsᴇ ɴ ʀᴇsɪsᴛᴀɴᴄᴇs ᴏғ 6 ᴏʜᴍ ᴀʀᴇ ᴄᴏɴɴᴇᴄᴛᴇᴅ ɪɴ ᴘᴀʀᴀʟʟᴇʟ ᴀɴᴅ ᴛʜᴇ ʀᴇsᴜʟᴛᴀɴᴛ ʀᴇsɪsᴛᴀɴᴄᴇ=ʀ

ᴛʜᴇɴ,

1/ʀ=ɴ/6=>ʀ=6/ɴ

ɴᴏᴡ ᴄᴜʀʀᴇɴᴛ ɪ=2 ᴀ,ᴠᴏʟᴛᴀɢᴇ ᴠ=3 ᴠᴏʟᴛs

ʙʏ ᴏʜᴍ's ʟᴀᴡ ᴠ=ɪʀ

3=2x6/ɴ

ɴ=4

ʜᴇɴᴄᴇ 4 ʙᴜʟʙs ᴀʀᴇ ᴄᴏɴɴᴇᴄᴛᴇᴅ ɪɴ ᴘᴀʀᴀʟʟᴇʟ. 

нσρє ιт нєℓρѕ

Answer 2

Answer:

Hope u would find the answer helpful