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Two circular coils of radii 5cm and 10cm carry currents of 2A. The coils have 50 and 100 turns respectiely and are placed in such a way that their planes as well as their cetre coincide. Magnitude of magnetic field at the common centre of coils is |
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Answer» `8pixx10^-4T` if CURRENTS in the coils are in same sense `=((4pixx10^I-7)(50)(2))/(2(5xx10^-2))` `=4pixx10^-4T` `B_2=(mu_0N_2i_2)/(2R_2)` `=((4pixx10^-7)(100)(2))/((2)(10xx10^-2))` `=4pixx10^-4T` When currets are in the same direction then `B_("NET")=B_1+B_2` When curents are in the opposite direction, then `B_("net")=B_1-B_2` |
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