linhphandorami 4/14/2024 3:42:57 PM

Câu 12: Một hạt điện tích q0 chuyển động với vận tốc https://lh7-us.googleusercontent.com/NtxRmPrsof51wMroDoe_xCmsJS9IrDif8AN2lFiDTA1jlmyBQcuhQyYaJyX8s8WHgWmOTLGok1i-bZxokTaA0Hn9oUhDDPVyFnO0tnwSGIxRc_9pGhdhxsviNQhoILclZ-LTgjREcolUaD4=s800 trong một từ trường đều có cảm ứng từhttps://lh7-us.googleusercontent.com/svVTnZ2K0sZrRJV0Xkbu1rc9NGlxAAcpqzETA0qb-ag6ukZWxIiyEPrZD2gxmCYjGXzHMQX6rqZUnuvO56UzikxQQwJ39hxNmu0mCMOb8D9lgXdyVtXZ4c3OITxbmte58uf7Qfi2C-c3eNA=s800. Biết https://lh7-us.googleusercontent.com/NtxRmPrsof51wMroDoe_xCmsJS9IrDif8AN2lFiDTA1jlmyBQcuhQyYaJyX8s8WHgWmOTLGok1i-bZxokTaA0Hn9oUhDDPVyFnO0tnwSGIxRc_9pGhdhxsviNQhoILclZ-LTgjREcolUaD4=s800 hợp với https://lh7-us.googleusercontent.com/svVTnZ2K0sZrRJV0Xkbu1rc9NGlxAAcpqzETA0qb-ag6ukZWxIiyEPrZD2gxmCYjGXzHMQX6rqZUnuvO56UzikxQQwJ39hxNmu0mCMOb8D9lgXdyVtXZ4c3OITxbmte58uf7Qfi2C-c3eNA=s800 một góc α. Độ lớn lực Lo-ren-xơ tác dụng lên q0 là

        A. https://lh7-us.googleusercontent.com/Ujjer6L7u1UHciUQhBzBRTULLno4QDDdlm80BnYnDPk63twWzUrkKXeI90aU9TNhe98yX3A-w60hAN95onwJEQkcahwL91yd-zENymXtxZzNvSswoGbHu3nFNeX_XIEW1SZBXNiKwQ8Dpx0=s800         B.https://lh7-us.googleusercontent.com/e628_FKm8tmmHIAW7OrPqrXtaxQ72zoxVAeeMQpAf7x5GWxn7KJhewn8QwuBN6BzVKIwxLFbmlt5sQg3TJfu564QQdYNypAiy8iYDtMumAspP2pjDP2XkL_USTtuMsiZa49Wh_2j0oQTOi0=s800         C.https://lh7-us.googleusercontent.com/Gbe93_tU8bAkBKyMQ-aIqiO9VVFLKcKOmcRYWwHpP0Tpf-6rBvS0b5l_2KDbhHfS-q4Y3lkYqMhjzdjaHk4edJa9pJY4BnRU4u0elGKcd7qpIdxsnsfXvZASeFg1YJCrqGjJ6PUtJnB7_q8=s800         D.https://lh7-us.googleusercontent.com/mNMjJwvd7hxuC6DnEm3SfzZkXsI806HQP82Mwc4dBaf21YJQX_crtHeFGNwjh-6P82cIigC1EaFvh81sR6UJ4vqyNc_OofNudzDmcNs12QrdWMHEEW0O9cWNpe7pjTMPfF9AHr7qv4XR_Sk=s800 

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