A) 1 : 1
B) 1 : 2
C) 2 : 1
D) 3 : 1
Correct Answer: A
Solution :
Magnetic field for coil 1 \[{{B}_{1}}=\frac{{{\mu }_{0}}Nl}{2R}\] Magnetic field for coil 2 \[{{B}_{2}}=\frac{{{\mu }_{0}}N(2l)}{2(2R)}=\frac{{{\mu }_{0}}Nl}{2R}\] \[\therefore \] \[\frac{{{B}_{1}}}{{{B}_{2}}}=\frac{1}{1}\]You need to login to perform this action.
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