protons in uniform magnetic field of .3T follow a circular trajectory with 20cm radius. Determine the speed of the protons. (q=1.6×10 -¹⁹ C and
m=1.673×10 -²⁷ kg)
Answer
Speed of protons
V=qBrm=1.6∗10−19∗0.3∗0.209.1∗10−27=10.50∗105m/secV=\frac{qBr}{m}\\=\frac{1.6*10^{-19}*0.3*0.20}{9.1*10^{-27}}\\=10.50*10^5m/secV=mqBr=9.1∗10−271.6∗10−19∗0.3∗0.20=10.50∗105m/sec
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