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General
Easy
Question
Figure shows a square current carrying loop ABCD of side 10 cm and current i = 10A. The magnetic moment 
of the loop is
The correct answer is:
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A charged particle enters a uniform magnetic field perpendicular to its initial direction travelling in air. The path of the particle is seen to follow the path in figure. Which of statements 1–3 is/are correct? [1] The magnetic field strength may have been increased while the particle was travelling in air [2] The particle lost energy by ionising the air [3] The particle lost charge by ionising the air
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A particle moving with velocity v having specific charge (q/m) enters a region of magnetic field B having width 
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