The cyclotron (gyration) frequency of an electron moving in a uniform magnetic field of 1 T is approximately

PhysicsMediumHigh School (11–12)jee-main

For a charged particle moving in a magnetic field perpendicular to its velocity, the magnetic force provides centripetype force, giving a cyclotron frequency

\displaystyle f=\frac{qB}{2\pi m}

which depends only on the charge-to-mass ratio and the field strength, not on the speed.

The cyclotron (gyration) frequency of an electron moving in a uniform magnetic field of $1\,T$ is approximately

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← Two long parallel wires A and B carry currents I₁ and I₂ (with I₂ < I₁) in the same direction. At a point midway between the wires, the magnetic field magnitude is 10 µ T. If the current I₂ is reversed in direction (keeping both magnitudes fixed), the field at that point becomes 30 µ T. What is the ratio I₁/I₂?A galvanometer with a coil resistance of 15 Ω gives full-scale deflection when a current of 5 mA passes through it. What resistance must be connected in series with the galvanometer to convert it into a voltmeter reading 0 to 10 V? →

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