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If the flow of electric current is parallel to the magnetic field, the force will be?
- a)Zero
- b)Infinity
- c)Maximum
- d)Half the original value
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
If the flow of electric current is parallel to the magnetic field, the...
Force is a cross product. A cross product involves the sine of the angle between them. If two quantities are parallel to each other, the angle between them is zero. Sin(0) is zero, hence force is zero.
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If the flow of electric current is parallel to the magnetic field, the...
Understanding the Interaction of Electric Current and Magnetic Fields
When electric current flows in a conductor, it generates a magnetic field around it. Conversely, when a magnetic field interacts with a current-carrying conductor, it experiences a force. This relationship is described by the Lorentz force law.
The Right-Hand Rule
- To determine the direction of the force acting on a current-carrying conductor in a magnetic field, we use the right-hand rule:
- Thumb: Direction of the electric current (I)
- Fingers: Direction of the magnetic field (B)
- Palm: Direction of the force (F)
Force when Current is Parallel to Magnetic Field
- If the flow of electric current is parallel to the magnetic field, both the current and magnetic field lines are aligned.
- According to the right-hand rule, when the current and magnetic field are parallel, the angle (θ) between them is 0 degrees.
Magnetic Force Calculation
- The force experienced by the conductor is given by the equation:
F = I × B × sin(θ)
- Here, θ is the angle between the current direction and the magnetic field direction.
- When θ = 0 degrees (parallel), sin(0) = 0.
Conclusion
- Therefore, the force (F) becomes zero when the current flows parallel to the magnetic field.
- This is why the correct answer is option 'A': the force will be zero.
Understanding this fundamental relationship is crucial in electrical engineering, especially in applications involving motors and generators where magnetic fields and electric currents interact.
When electric current flows in a conductor, it generates a magnetic field around it. Conversely, when a magnetic field interacts with a current-carrying conductor, it experiences a force. This relationship is described by the Lorentz force law.
The Right-Hand Rule
- To determine the direction of the force acting on a current-carrying conductor in a magnetic field, we use the right-hand rule:
- Thumb: Direction of the electric current (I)
- Fingers: Direction of the magnetic field (B)
- Palm: Direction of the force (F)
Force when Current is Parallel to Magnetic Field
- If the flow of electric current is parallel to the magnetic field, both the current and magnetic field lines are aligned.
- According to the right-hand rule, when the current and magnetic field are parallel, the angle (θ) between them is 0 degrees.
Magnetic Force Calculation
- The force experienced by the conductor is given by the equation:
F = I × B × sin(θ)
- Here, θ is the angle between the current direction and the magnetic field direction.
- When θ = 0 degrees (parallel), sin(0) = 0.
Conclusion
- Therefore, the force (F) becomes zero when the current flows parallel to the magnetic field.
- This is why the correct answer is option 'A': the force will be zero.
Understanding this fundamental relationship is crucial in electrical engineering, especially in applications involving motors and generators where magnetic fields and electric currents interact.
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If the flow of electric current is parallel to the magnetic field, the force will be?a)Zerob)Infinityc)Maximumd)Half the original valueCorrect answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2025 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about If the flow of electric current is parallel to the magnetic field, the force will be?a)Zerob)Infinityc)Maximumd)Half the original valueCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If the flow of electric current is parallel to the magnetic field, the force will be?a)Zerob)Infinityc)Maximumd)Half the original valueCorrect answer is option 'A'. Can you explain this answer?.
If the flow of electric current is parallel to the magnetic field, the force will be?a)Zerob)Infinityc)Maximumd)Half the original valueCorrect answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2025 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about If the flow of electric current is parallel to the magnetic field, the force will be?a)Zerob)Infinityc)Maximumd)Half the original valueCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If the flow of electric current is parallel to the magnetic field, the force will be?a)Zerob)Infinityc)Maximumd)Half the original valueCorrect answer is option 'A'. Can you explain this answer?.
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