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MOTION-ELECTROMAGNETISM-Exercise
- A metal wire of mass m slides without friction on two horizontal rails...
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- Two identical magnetic dipoles of magnetic moments 1*0Am^2 each are pl...
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- Two short barmagnet of magnetic moments M1 and M2 are kept on X and Y ...
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- A magnet of length 14 cm and magnetic moment mu is broken into two par...
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- Torques tau(1) and tau(2) are required for a magnetic needle to remain...
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- A magnetised wire of moment M is bent into an arc of a circle subtendi...
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- Magnetic field produced by electrons in aotms and molecules is due to ...
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- When a magnet is heated, its strength –
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- The lines of forces due to earth's horizontal component of magnetic fi...
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- A deflection magnetometer can be used for measuring –
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- A line joining places of zero declination is called
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- A hydrogen atom is a paramagnetic. A hydrogen molecule is –
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- The core of electromagnet is made of soft iron because a) the susc...
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- A permanent magnet –
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- The relative permeability of a substance X is slightly less than unity...
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- The variation of magnetic susceptibility (chi) with absolute temperatu...
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- A conducting loop is pulled with a constant velocity towards a region ...
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- A conducting loop of resistance R and radius r has its centre at the o...
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- A small conducting circular ring of area 2 mm2 is placed coplanerly wi...
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- A conducting square loop edge length a and resistance R is in a unifor...
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