Motion of Charged Particles in Fields

Which of the following particles or radiations will not be deflected by a magnetic field? (Select all)

• alpha particle

• beta particle

• gamma radiation

• neutrino

Which equation is used to calculate the force acting on a charged particle of charge q that is moving with speed v at angle θ to magnetic field of flux density B?

• $F=Bqv$

• $F=Bqv\cos\theta$

• $F=Bqv\sin\theta$

• $F=Bqv\tan\theta$

A proton enters a region of uniform magnetic field at right angles. What is the shape of its path in the field?

• straight line

• circle

• parabola

• random

Magnetic force on a moving charged particle is always _______ to its direction of motion.

• perpendicular

• parallel

• opposite

• not related

Four small particles are seen moving through an area with the magnetic field going out of the page. Which of the following statements is consistent with the diagram?

• All the particles are positively charges but have different mass

• All the particles have same mass, but different charges

• Two particles are positive while one is negative

• Two particles are negative while one is positive

• You can only ascertain that all are charged

What does the following represent?

⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗

⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗

⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗

• Multiplied by a billion

• A piece of modern art

• Uniform magnetic field directed into the screen away from you

• Uniform magnetic field directed out of your screen at you

What does the following represent?
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙

• A crowd with binoculars
• A bunch of coaxial cables 
• Uniform magnetic field directed into the screen away from you
• Uniform magnetic field directed out of your screen at you

What is the relationship between the charge of a particle and its deflection in an electric field?

• Inverse proportional

• No relationship

• Directly proportional

• Exponential relationship

How does the mass of a particle affect its deflection in fields?

• Heavier particles with greater mass experience less deflection compared to lighter particles when subjected to the same field.

• Mass has no impact on particle deflection in fields

• Particles with more mass deflect more in fields

• Lighter particles experience greater deflection in fields

How does the energy of a particle influence its deflection in fields?

• Particles with higher energy are more deflected in fields compared to lower energy particles.

• Energy of a particle has no effect on its deflection in fields.

• Higher energy particles are less deflected in fields compared to lower energy particles.

• Particles with higher energy are deflected at a 90-degree angle in fields.

Answer explanation

The energy of a particle influences its deflection in fields because higher energy particles move faster and are less affected by the field, resulting in less deflection. Conversely, lower energy particles move slower and are more easily deflected by the field. The deflection also depends on the type and strength of the field (e.g., electric or magnetic) and the charge and mass of the particle.