Magnetic Fields and Forces Quiz

What produces a magnetic field?

• Stationary charges
• Charges in motion
• Neutral particles
• Gravitational fields

Which symbol represents current flowing into the page in circuit diagrams?

• •
• ⊗
• →
• ←

What is the relationship between the magnitude of a magnetic field and the distance from a long wire?

• Directly proportional
• Inversely proportional
• No relationship
• Exponentially related

What does the right-hand rule for a current-carrying wire determine?

• Direction of current
• Direction of magnetic field
• Magnitude of magnetic field
• Resistance of the wire

In the equation F = ILB sin θ, what does 'I' represent?

• Current
• Inductance
• Impedance
• Intensity

When is the magnetic force on a current-carrying wire maximum?

• When θ = 0°
• When θ = 45°
• When θ = 90°
• When θ = 180°

What determines the direction of force on a current-carrying wire in a magnetic field?

• First right-hand rule
• Second right-hand rule
• Left-hand rule
• Fleming's rule

How does doubling the current in a wire affect the magnetic force it experiences in a uniform magnetic field?

• No change
• Force is halved
• Force is doubled
• Force is quadrupled

What happens to the magnetic force on a charged particle if its velocity is parallel to the magnetic field?

• Force increases
• Force decreases
• Force remains the same
• Force becomes zero

In the equation F = qvB sin θ for a charged particle in a magnetic field, what does 'q' represent?

• Quality factor
• Quantum number
• Electric charge
• Magnetic flux