Hình vẽ nào sau đây mô tả đúng về phương, chiều lực từ \(\vec F\) tác dụng lên một đoạn dây dẫn thẳng mang dòng điện cường độ I đặt trong một từ trường đều \(\overrightarrow {\rm{B}} \)

Hãy suy nghĩ và trả lời câu hỏi trước khi xem đáp án
- Phương: vuông góc với mặt phẳng tạo bởi $\vec{B}$ và dòng điện I.
- Chiều: tuân theo quy tắc bàn tay trái.
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Few people would disagree that one of the world's most popular dishes is pizza. Twenty-two-year-old Zack certainly wouldn't. He would eat a variety of pizza-based items, including homemade pizza, precooked microwave pizza, and even pizza leftovers from the night before. He was consuming 800kg of pizza a year. As a child, Zack had eaten a wide variety of food. But he became addicted to pizza when he started secondary school. American school meals have often been criticised for the large amount of fast food present on the menu, and pizza is the star dish. Zack even spent all his pocket money on slices of pizza.
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(Adapted from Friends Global)
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