Understanding Electric and Magnetic Fields

What must a particle have to experience an electric field?

• Mass

• Charge

• Velocity

• Temperature

For a particle to feel a magnetic field, it must have charge and what else?

• Temperature

• Velocity

• Mass

• Pressure

When is the magnetic force on a charged particle at its maximum?

• When velocity and magnetic field are perpendicular

• When velocity and magnetic field are parallel

• When magnetic field is zero

• When velocity is zero

What rule is used to determine the direction of the magnetic force on a charged particle?

• Coulomb's rule

• Newton's rule

• Left-hand rule

• Right-hand rule

In the right-hand rule, what does the thumb represent?

• Direction of velocity

• Direction of force

• Direction of charge

• Direction of magnetic field

What do X's in a diagram typically represent in terms of magnetic fields?

• Magnetic field going into the board

• Magnetic field coming out of the board

• Electric field direction

• Velocity direction

What type of motion does a charged particle exhibit in a uniform magnetic field?

• Circular motion

• Oscillatory motion

• Linear motion

• Random motion

What is the force that keeps a charged particle moving in a circle in a magnetic field?

• Centripetal force

• Gravitational force

• Electrostatic force

• Frictional force

If a particle has a charge of 1 x 10^-6 C and moves at 1500 m/s in a magnetic field of 200 T, what is the magnetic force on it?

• 3.0 N

• 0.3 N

• 1.5 N

• 2.3 N

How can you find the radius of the circular motion of a charged particle in a magnetic field?

• By calculating the electric field strength

• By measuring the diameter of the circle

• By setting the magnetic force equal to the centripetal force

• By using the gravitational force equation