Question

An electric dipole is in stable equilibrium in an electric field , then *​

Answer 1

A dipole is said to be in stable equilibrium when angle between electric field and dipole moment is (1) Zero (2) 180 degree (3) 45 degree (4) 90 degree. The moment of the dipole is directed between -ve charge and + charge. Net force and torque on the system should be zero in equilibrium.

Answer 2

ᴀɴsᴡᴇʀ: ᴅɪᴘᴏʟᴇ ɪs ɪɴ ᴄᴏɴsᴛᴀɴᴛ ᴇǫᴜɪʟɪʙʀɪᴜᴍ ɪғ θ = . ᴀ ᴀ ᴅɪᴘᴏʟᴇ ɪɴ sᴛᴀʙʟᴇ ᴇǫᴜɪʟɪʙʀɪᴜᴍ, ᴡʜᴇɴ ᴇʟᴇᴄᴛʀɪᴄ ғɪʟᴇᴅ ᴀɴᴅ ᴅɪᴘᴏʟᴇ ᴍᴏᴍᴇɴᴛ ᴀʀᴇ ᴘᴇʀᴘᴇɴᴅɪᴄᴜʟᴀʀ ᴛᴏ ᴇᴀᴄʜ ᴏᴛʜᴇʀ ɪ.ᴇ. ᴛʜᴇ ᴀɴɢʟᴇ ʙᴇᴛᴡᴇᴇɴ ᴛʜᴇᴍ ɪs ᴢᴇʀᴏ ᴅᴇɢʀᴇᴇ ᴀɴᴅ ᴛᴏʀǫᴜᴇ ᴡɪʟʟ ʙᴇ ᴍᴀxɪᴍᴜᴍ.

ʜᴏᴘᴇ ɪᴛ ᴡɪʟʟ ʜᴇʟᴘ ᴜ

ᴍᴀʀᴋ ᴍᴇ ᴀs ᴀ ʙʀᴀɪɴʟɪsᴛ