1.What is the locus of a point at which the electric field E due to an electric dipole is parallel to the line joining the charges +q and -q forming the dipole ?
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2.State one important difference between Peltier’s Effect and Joule’s Effect.
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3.Three bulbs of specifications 60 W/220 V, 100 W/220 V and 1000 W/220 V are connected in series. Which one will glow the brightest ?
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4.State one important property of a standard cell.
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5.A wire of resistance 20 Ω is bent in the form of a complete circle. Find the resistance between two diametrically opposite points.
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6.What will be the direction of current at the cold junction of a thermocouple thermometer in which iron and copper is being used. (Fe to Cu or Cu to Fe).
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7.
A wire of length 10 cm, carrying 10 Amp of current is placed at an angle of 53° with respect to a magnetic field B of strength 0.1 Tesla. Find the force experienced by the wire []
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8.Define ‘HYSTERESIS’.
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9.Find the percentage increase in magnetic field intensity when a solenoid carrying current is filled with aluminium [x for A1 = 2.1 x 10-3 ].
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