Which of the following correctly describes the magnetic field near a long straight wire?; A. The field consists of straight lines perpendicular to the wire.; B. The field consists of straight lines parallel to the wire.; C. The field consists of radial lines originating from the wire.; D. The field consists of concentric circles centred on the wire.
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D. The field consists of concentric circles centred on the wire
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Ans- option D
ᴀᴄᴄᴏʀᴅɪɴɢ ᴛᴏ ʀɪɢʜᴛ ʜᴀɴᴅ ᴛʜᴜᴍʙ ʀᴜʟᴇ ᴛʜᴇ ᴍᴀɢɴᴇᴛɪᴄ ғɪᴇʟᴅ ʟɪɴᴇs, ᴘʀᴏᴅᴜᴄᴇᴅ ᴀʀᴏᴜɴᴅ ᴀ sᴛʀᴀɪɢʜᴛ ᴄᴜʀʀᴇɴᴛ-ᴄᴀʀʀʏɪɴɢ ᴄᴏɴᴅᴜᴄᴛᴏʀ, ᴀʀᴇ ᴄᴏɴᴄᴇɴᴛʀɪᴄ ᴄɪʀᴄʟᴇs.
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