\( \Rightarrow \frac{{{B_1}}}{{{B_2}}} = \frac{{{\theta _1}}}{{{\theta _2}}}.\frac{{{i_1}}}{{{i_2}}}\)
\(\frac{{{B_1}}}{{{B_2}}} = \frac{{{\theta _1}}}{{{\theta _2}}} \times \frac{{{\theta _2}}}{{{\theta _1}}}\)
\( \Rightarrow {B_1} = {B_2}\)
(ઇલેક્ટ્રૉનનો વિજભાર $=1.6 \times 10^{-19}\,C$)