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A square loop of side 2cm carrying current I_(0) is placed in x-y plane in a magnetic field B= (4hat(i)+3hat(j)) T Find the unit vector along the axis about which it will start rotating. |
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Answer» `(4hat(j)+3HAT(i))/5` and`VEC(B)=4hat(i)+3hat(j)` `vec(B)=4/5hat(i)+3/5hat(j)` `mu=ivec(A)` `=-(4xx10^(-4)xxI_(0))hat(k)` `hat(tau)=muxxhat(B)` `hat(tau)=4/5hat(j)-3/5hat(i)` Thus the unit vector of the AXIS is `PM hat(tau)` |
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