An electron moves in a circle of radius 4.0 cm in a uniform magnetic field of flux density 150 mT150\text{ mT}150 mT.
What is the momentum of this electron?
9.6×10−17 kg m s−19.6 \times 10^{-17}\text{ kg m s}^{-1}9.6×10−17 kg m s−1
9.6×10−19 kg m s−19.6 \times 10^{-19}\text{ kg m s}^{-1}9.6×10−19 kg m s−1
9.6×10−20 kg m s−19.6 \times 10^{-20}\text{ kg m s}^{-1}9.6×10−20 kg m s−1
9.6×10−22 kg m s−19.6 \times 10^{-22}\text{ kg m s}^{-1}9.6×10−22 kg m s−1
