The video tutorial explores the motion of a proton in a magnetic field, calculating the force and radius of its circular path using centripetal force concepts. It highlights applications in old TVs and cyclotrons, and contrasts proton and electron behavior in magnetic fields.

What is the initial velocity of the proton as it enters the magnetic field?

• 9 x 10^7 meters per second

• 6 x 10^7 meters per second

• 3 x 10^7 meters per second

• 1.2 x 10^8 meters per second

Which rule is used to determine the direction of the force on the proton?

• Left-hand rule

• Coulomb's law

• Right-hand rule

• Newton's third law

What happens to the proton's velocity as it moves through the magnetic field?

• It increases

• It stops

• It remains constant in magnitude

• It decreases

What type of force causes the proton to move in a circle?

• Electrostatic force

• Gravitational force

• Centripetal force

• Nuclear force

What is the calculated radius of the proton's circular path?

• 5 meters

• 1.25 meters

• 0.75 meters

• 2.5 meters

How do old-school TVs utilize magnetic fields?

• To enhance color quality

• To deflect electron beams

• To power the screen

• To increase screen size

What is a cyclotron used for?

• Cooling systems

• Accelerating particles

• Measuring temperature

• Generating electricity

What is the main difference between the charge of a proton and an electron?

• Proton is positive, electron is negative

• Proton is negative, electron is positive

• Both are positive

• Both are negative

How does the mass of an electron compare to that of a proton?

• Electron is heavier

• They have the same mass

• Mass is irrelevant

• Proton is heavier

What effect does the smaller mass of an electron have on its path in a magnetic field?

• Stops the motion

• No effect

• Smaller radius

• Larger radius