Home
Class 12
PHYSICS
If an electron is not deflected in passi...

If an electron is not deflected in passing through a certain region of space can we be sure that there is no magnetic field in that region?

Text Solution

AI Generated Solution

To determine whether we can be sure that there is no magnetic field in a region of space where an electron is not deflected, we can analyze the forces acting on the electron. ### Step-by-Step Solution: 1. **Understanding the Forces on a Charged Particle**: An electron is a charged particle and experiences forces when it moves through electric and magnetic fields. The force due to an electric field \( \mathbf{E} \) is given by: \[ \mathbf{F}_E = q \mathbf{E} ...
Promotional Banner

Topper's Solved these Questions

  • MOVING CHARGES AND MAGNETISM

    AAKASH INSTITUTE ENGLISH|Exercise Try Yourself|27 Videos

  • MOVING CHARGES AND MAGNETISM

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section A) Objective Type Questions (One option is correct)|55 Videos

  • MOVING CHARGES AND MAGNETISM

    AAKASH INSTITUTE ENGLISH|Exercise Assignment Section J (Aakash Challengers Questions)|5 Videos

  • MOVING CHARGE AND MAGNESIUM

    AAKASH INSTITUTE ENGLISH|Exercise SECTION D|16 Videos

  • NUCLEI

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION-D)|10 Videos

Similar Questions

Explore conceptually related problems

If a moving electron if deflected sideways in passing through a certain region of space, can we be sure that a magnetic field exists in that region?

An electron is not deflected an through a certain region because

(A) : If an electron is not deflected while passing through a certain region of space, then only possibility is that there is no magnetic field in this region (R) : Force on an electron moving in a magnetic field is inversely proportional to the magnetic field applied.

(A) : If an electron is not deflected while passing through a certain region of space, then only possibility is that there is no magnetic field in this region. (R) : Magnetic force on a charged particle is directly proportional to specific charge of particle.

If a beam of electrons travels in a straight line in a certain region. Can we say there is no magnetic field?

An electron does not suffer any deflection while passing through a region of uniform magnetic field. What is the direction of the magnetic field ?

The average electric field of electromagnetic waves in certain region of free space is 9 xx 10^(–4) NC^(–1) . Then the average magnetic field in the same region is of the order of

Assertion A beam of electron can pass undeflected through a region of E and B. Reason Force on moving charged particle due to magnetic field may be zero in some cases.

A beam consisting of protons and electrons moving at the same speed goes through athin region in which there is a magnetic field perpendicular to the beam. Protons and the electrons

Following experiment was performed by J.J. Thomson in order to measure ratio of charge e and mass m of electron. Electrons emitted from a hot filament are accelerated by a potential difference V. As the electrons pass through deflecting plates, they encounter both electric and magnetic fields. the entire region in which electrons leave the plates they enters a field free region that extends to fluorescent screen. The entire region in which electrons travel is evacuated. Firstly, electric and magnetic fields were made zero and position of undeflected electron beam on the screen was noted. The electric field was turned on and resulting deflection was noted. Deflection is given by d_(1) = (eEL^(2))/(2mV^(2)) where L = length of deflecting plate and v = speed of electron. In second part of experiment, magnetic field was adjusted so as to exactly cancel the electric force leaving the electron beam undeflected. This gives eE = evB . Using expression for d_(1) we can find out (e)/(m) = (2d_(1)E)/(B^(2)L^(2)) A beam of electron with velocity 3 xx 10^(7) m s^(-1) is deflected 2 mm while passing through 10 cm in an electric field of 1800 V//m perpendicular to its path. e//m for electron is