The diagram shows a wire, carrying a current 'I', placed between the poles of a magnet. In which direction does the force on the wire act?
Correct answer: B. Downwards
- A. Upwards
- B. Downwards
- C. Towards the 'N' pole of the magnet
- D. Towards the 'S' pole of the magnet
Explanation
We can determine the direction of the force on the current-carrying wire using Fleming's Left-Hand Rule.Step-by-step explanation:Magnetic field direction (B):It is from the North (N) pole to the South (S) pole (left to right).Current direction (I):The current is going upwards (as shown by the arrow labeled I).Force direction (F):By Fleming's Left-Hand Rule:First finger = Magnetic field (left to right),Second finger = Current (upwards),Thumb = Force (direction of motion).When you align your left hand as per this rule, the thumb points out of the page (towards you).
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Electromagnetism
Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
Practise Electromagnetism
1,176 free Electromagnetism MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electromagnetism questions
Two long parallel wires Wire 1 and Wire 2 repel each other as shown in the figure. What could be the reasons?
The electron gun in a cathode ray oscilloscope contains:
Which of the following is the proper way to study the sinusoidal waveform of the voltage?
Due to the current in a straight conductor the difference between magnetic field lines:
Magnetic Resonance Imaging (MRI) is used to identify the image of:
A solenoid is cut into two halves. Magnetic induction due to the same current in each half will be: