What value of can be set up at the equator to permit a proton of speed to circulate…

PHYSICS · Subjective · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism

Problem

What value of

B

can be set up at the equator to permit a proton of speed

10^7\text{ m/s}

to circulate around the Earth?

r=6.4\times10^6\text{ m},\quad m_p=1.67\times10^{-27}\text{ kg}