Motion in Combined Electric and Magnetic Field

# Motion in Combined Electric and Magnetic Field Video Lecture | Physics for JEE Main & Advanced

## Physics for JEE Main & Advanced

289 videos|635 docs|179 tests

## FAQs on Motion in Combined Electric and Magnetic Field Video Lecture - Physics for JEE Main & Advanced

 1. What is the motion in a combined electric and magnetic field?
Ans. The motion in a combined electric and magnetic field refers to the movement of charged particles when they are subjected to both electric and magnetic forces simultaneously. The charged particles experience a force due to the electric field (Coulomb's law) and a force due to the magnetic field (Lorentz force), which causes them to move in a specific trajectory.
 2. How does the motion of charged particles change in a combined electric and magnetic field compared to an electric or magnetic field alone?
Ans. In a combined electric and magnetic field, the motion of charged particles differs from that in an electric or magnetic field alone. While in an electric field alone, charged particles experience an acceleration in the direction of the electric field lines, in a magnetic field alone, charged particles move in circular or helical paths. However, in a combined electric and magnetic field, the motion of charged particles becomes a combination of both effects, resulting in more complex trajectories.
 3. What factors determine the trajectory of charged particles in a combined electric and magnetic field?
Ans. The trajectory of charged particles in a combined electric and magnetic field depends on several factors. The magnitude and direction of the electric field, the magnitude and direction of the magnetic field, the charge of the particle, and the initial velocity of the particle all play crucial roles in determining the path the particle will follow. Any changes in these factors can significantly alter the trajectory.
 4. Can the motion of charged particles in a combined electric and magnetic field be controlled?
Ans. Yes, the motion of charged particles in a combined electric and magnetic field can be controlled to a certain extent. By adjusting the strength and direction of the electric and magnetic fields, it is possible to manipulate the trajectory of charged particles. This control is utilized in various applications such as particle accelerators, mass spectrometers, and cathode ray tubes.
 5. What are some practical applications of the motion in a combined electric and magnetic field?
Ans. The motion in a combined electric and magnetic field has numerous practical applications. Particle accelerators, such as the Large Hadron Collider, use this principle to accelerate charged particles to high energies. Mass spectrometers employ it to separate and analyze ions based on their mass-to-charge ratios. In cathode ray tubes, the motion of charged particles in a combined field creates the electron beam used for displaying images on screens. These are just a few examples of the many applications that rely on the understanding and control of motion in a combined electric and magnetic field.

## Physics for JEE Main & Advanced

289 videos|635 docs|179 tests

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