
What is the direction of the magnetic force on the electron? What is the magnitude of magnetic force on an electron? What is the direction of the magnetic force on the proton? What is the magnitude of magnetic force on protons?
Answer
449.4k+ views
Hint: The magnetic force on any moving charged particle is given by the product of the charged particle and the vector product of velocity of the charged particle and the magnetic field. Using this formula, we shall determine the direction and magnitude of magnetic force on an electron and a proton.
Complete step-by-step solution:
Let us say there is a magnetic field ( ) perpendicular to the page coming outwards. And let us assume the electrons and protons are initially travelling with the same velocity as shown in the figure:
Here, we can see that they have the same velocity, are under the same magnetic field but their charges are equal and opposite.
The magnitude of magnetic force on electron and proton in this case will be same and equal to:
Now, since they have opposite signs of charges, the direction of the net magnetic field on them will also be opposite. The direction of magnetic force on them can be calculated using Fleming’s right hand thumb rule and this direction is shown in the following diagram:
Here, we can see the direction of magnetic force on the proton is towards right and on electron is towards left.
Hence, the magnitude of force on electron and proton under the same conditions is equal but the direction of magnetic force is opposite due to opposite signs of these charges.
Note: In the above solution, we saw the direction and magnitude of force on an electron and proton, when they are initially under motion. If these particles are at rest in a magnetic field, then their velocity vector is zero, hence the net magnetic force acting on these particles will also be equal to zero.
Complete step-by-step solution:
Let us say there is a magnetic field (

Here, we can see that they have the same velocity, are under the same magnetic field but their charges are equal and opposite.
The magnitude of magnetic force on electron and proton in this case will be same and equal to:
Now, since they have opposite signs of charges, the direction of the net magnetic field on them will also be opposite. The direction of magnetic force on them can be calculated using Fleming’s right hand thumb rule and this direction is shown in the following diagram:

Here, we can see the direction of magnetic force on the proton is towards right and on electron is towards left.
Hence, the magnitude of force on electron and proton under the same conditions is equal but the direction of magnetic force is opposite due to opposite signs of these charges.
Note: In the above solution, we saw the direction and magnitude of force on an electron and proton, when they are initially under motion. If these particles are at rest in a magnetic field, then their velocity vector is zero, hence the net magnetic force acting on these particles will also be equal to zero.
Recently Updated Pages
Earth rotates from West to east ATrue BFalse class 6 social science CBSE

The easternmost longitude of India is A 97circ 25E class 6 social science CBSE

Write the given sentence in the passive voice Ann cant class 6 CBSE

Convert 1 foot into meters A030 meter B03048 meter-class-6-maths-CBSE

What is the LCM of 30 and 40 class 6 maths CBSE

What is history A The science that tries to understand class 6 social science CBSE

Trending doubts
Father of Indian ecology is a Prof R Misra b GS Puri class 12 biology CBSE

Who is considered as the Father of Ecology in India class 12 biology CBSE

Enzymes with heme as prosthetic group are a Catalase class 12 biology CBSE

A deep narrow valley with steep sides formed as a result class 12 biology CBSE

An example of ex situ conservation is a Sacred grove class 12 biology CBSE

Why is insulin not administered orally to a diabetic class 12 biology CBSE
