An electron having charge 1.6\times10^{-19} C and mass 9\times10^{-31} kg is moving with 4\times10^{6} m.s^{-1} speed in a magnetic field 2\times10^{-1} T in a circular orbit. The force acting on electron and the radius of the circular orbit is __________

Correct Answer is : 1.28×10−13 N, 1.1×10−4 m

12.8\times10^{-13} N, 1.1\times10^{-4} m

1.28\times10^{-14} N, 1.1\times10^{-3} m

1.28\times10^{-13} N, 1.1\times10^{-3} m

1.28\times10^{-13} N, 1.1\times10^{-4} m

AP EAMCET Engineering 23 Sep 2020 Shift 1 Paper

Section: Physics

Question : 106 of 160

Marks: +1, -0

An electron having charge 1.6×10−19 C and mass 9×10−31 kg is moving with 4×106 m.s−1 speed in a magnetic field 2×10−1 T in a circular orbit. The force acting on electron and the radius of the circular orbit is __________

12.8×10−13 N, 1.1×10−4 m
1.28×10−14 N, 1.1×10−3 m
1.28×10−13 N, 1.1×10−3 m
1.28×10−13 N, 1.1×10−4 m

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