Entries by kp-web-admin

*Sin & cos as projections

*Sin & cos as projections Actually cos & sin gives us an ideas of projections (shadows) of a line on x & y axis respectively. Consider a line of length L making an anticlockwise angle q with + x axis. Let Lx (= ON) &Ly (= OM) be its x & y projections, then If […]

Angle measurement

<Angle measurement Anticlock wise angles are taken as positive & clockwise as negative (using right hand rule). 1revolution =1rotation = 1 cycle = 2p rad = 3600

A long horizontal fixed wire carries a current of 100 A.

A long horizontal fixed wire carries a current of 100 A. Directly above and parallel to it is another wire carrying a current of 20 A and weighing 0.04 N/m. The separation between the two wires so that the upper wire is just supported by the magnetic repulsion is (A.) 3 cm (B.) 2 cm […]

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