An electron has mass $9 \times {10^{ - 31}}\,kg$ and charge $1.6 \times {10^{ - 19}}C$ is moving with a velocity of ${10^6}\,m/s$, enters a region where magnetic field exists. If it describes a circle of radius $0.10\, m$, the intensity of magnetic field must be
An electron has mass $9 \times {10^{ - 31}}\,kg$ and charge $1.6 \times {10^{ - 19}}C$ is moving with a velocity of ${10^6}\,m/s$, enters a region where magnetic field exists. If it describes a circle of radius $0.10\, m$, the intensity of magnetic field must be
- A
$1.8 \times {10^{ - 4}}\,T$
- B
$5.6 \times {10^{ - 5}}\,T$
- C
$14.4 \times {10^{ - 5}}\,T$
- D
$1.3 \times {10^{ - 6}}\,T$
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