Electrostatics and MRI Quiz

What is the primary force that governs electrostatics?

• Magnetic force

• Gravitational force

• Electric force

• Nuclear force

In electrodynamics, what is the relationship between electric current and magnetic fields?

• They are independent

• Electric current creates a magnetic field

• Magnetic fields create electric current

• Both A and B

What is the primary component of an MRI machine that generates a magnetic field?

• Gradient coils

• Radiofrequency coils

• Superconducting magnets

• RF amplifier

What is the basic principle behind MRI imaging?

• X-ray absorption

• Nuclear magnetic resonance

• Electromagnetic radiation

• Electrical impedance

What is the primary concern when working near an MRI machine?

• Loud noise

• Radiation exposure

• Strong magnetic fields

• Electrical hazards

Patients with which of the following devices are usually contraindicated for an MRI?

• Pacemaker

• Hearing aid

• Dental fillings

• Contact lenses

What do gradient coils do in an MRI scanner?

• Generate the main magnetic field

• Produce radiofrequency pulses

• Create spatial variations in the magnetic field

• Detect the MRI signal

Which component of the MRI scanner is responsible for transmitting and receiving radiofrequency signals?

• Main magnet

• RF coils

• Gradient coils

• Console

What is the primary force that governs electrostatics?

• Magnetic force

• Gravitational force

• Electric force

• Nuclear force

In electrodynamics, what is the relationship between electric current and magnetic fields?

• They are independent

• Electric current creates a magnetic field

• Magnetic fields create electric current

• Both A and B