JEE Main 2015 — Physics Electromagnetism
A short bar magnet is placed in the magnetic meridian of the earth with North Pole pointing north. Neutral points are found at a distance of 30cm from the magnet on the East-West line, drawn through the middle point of the magnet. The magnetic moment of the magnet in Am2 is close to:
(Given 4πμ0=10−7 in SI units and BH= Horizontal component of earth's magnetic field =3.6×10−5 Tesla.)
Held on 11 Apr 2015 · Verified 6 Jul 2026.
4.9
14.6
19.4
9.7
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A square loop of side $2$ cm is placed in a time varying magnetic field with magnitude as $B = 0.4\sin(300t)$ Tesla. The normal to the plane of loop makes an angle of $60°$ with the field. The maximum induced emf produced in the loop is __________ mV.
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