A proton enters a region of the magnetic field B with its ve…
A proton enters a region of the magnetic field B with its velocity always perpendicular to the field so that it travels in a circular path with an angular speed of 2.4×104 rad/s. What is the value of B? [Mass of proton=1.67× 10–27 kg, e= 1.6× 10–19 C]
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