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A jet plane is travelling towards west at a speed of 1800 km/h. What is the voltage difference developed between the ends of the wing having a span of 25 m, if the Earth's magnetic field at the location has a magnitude of 5 xx 10^(-4) T and the dip angle is 30^@. |
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Answer» Solution : Here component of magnetic field of Earth which is PERPENDICULAR to both `vecv` and `VECL`is vertical component `B_V`, given by FORMULA `B_V=B sin phi` (Where `phi`=dip angle of given place) `=(5XX10^(-4))sin30^@` `therefore B_V=2.5xx10^(-4)` T Induced emf across LENGTH l of the wing of a plane is , `epsilon=B_V vl` `=1800xx10/36=500 m/s` `=(2.5xx10^(-4))(500)(25)` `therefore epsilon`=3.125 V (volt) |
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