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A uniform electric field and uniform magneticfield are acting along the same direction in acertain region. If an electron is projected in theregion such that its velocity is pointed alongthe direction of fields, then the electron [2011]
- a)will turn towards right of direction of motion
- b)speed will decrease
- c)speed will increase
- d)will turn towards left direction of motion
Correct answer is option 'B'. Can you explain this answer?
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A uniform electric field and uniform magneticfield are acting along th...
are in same direction so that magnetic force on electron becomes zero, only electric force acts. But force on electron due to electric field is opposite to the direction of velocity.Most Upvoted Answer
A uniform electric field and uniform magneticfield are acting along th...
Explanation:
Effect of Electric and Magnetic Fields on Electron:
- When an electron is projected in a region with both electric and magnetic fields acting along the same direction, the electric field will exert a force on the electron in the direction of the field, while the magnetic field will cause the electron to experience a force perpendicular to both its velocity and the magnetic field.
- Since the electron's initial velocity is along the direction of the fields, only the electric field will affect its motion initially.
Effect on Speed:
- The electric field will accelerate the electron in the direction of the field, causing its speed to increase.
- As the electron's speed increases, the magnetic field's force on the electron will also increase, causing it to move in a circular path.
Resultant Effect:
- The electron will move in a circular path due to the combined effect of the electric and magnetic fields.
- The speed of the electron will decrease as it moves in a circular path, following the laws of circular motion.
Therefore, when an electron is projected in a region with both electric and magnetic fields acting along the same direction and its velocity is also along the direction of the fields, its speed will decrease.
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A uniform electric field and uniform magneticfield are acting along the same direction in acertain region. If an electron is projected in theregion such that its velocity is pointed alongthe direction of fields, then the electron [2011]a)will turn towards right of direction of motionb)speed will decreasec)speed will increased)will turn towards left direction of motionCorrect answer is option 'B'. Can you explain this answer?
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A uniform electric field and uniform magneticfield are acting along the same direction in acertain region. If an electron is projected in theregion such that its velocity is pointed alongthe direction of fields, then the electron [2011]a)will turn towards right of direction of motionb)speed will decreasec)speed will increased)will turn towards left direction of motionCorrect answer is option 'B'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about A uniform electric field and uniform magneticfield are acting along the same direction in acertain region. If an electron is projected in theregion such that its velocity is pointed alongthe direction of fields, then the electron [2011]a)will turn towards right of direction of motionb)speed will decreasec)speed will increased)will turn towards left direction of motionCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A uniform electric field and uniform magneticfield are acting along the same direction in acertain region. If an electron is projected in theregion such that its velocity is pointed alongthe direction of fields, then the electron [2011]a)will turn towards right of direction of motionb)speed will decreasec)speed will increased)will turn towards left direction of motionCorrect answer is option 'B'. Can you explain this answer?.
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