An electron is moving in a circular orbit of radius R at angular velocity 0 in a field free space. If a magnetic field B is created, the velocity of electron will be given by the equation

• A. <img src="/_files/images/electronics-and-communication-engineering/materials-and-components/81-1.png">
• B. <img src="/_files/images/electronics-and-communication-engineering/materials-and-components/81-2.png">
• C. <img src="/_files/images/electronics-and-communication-engineering/materials-and-components/81-3.png">
• D. <img src="/_files/images/electronics-and-communication-engineering/materials-and-components/81-4.png">