Inv5.Exp2 Test

You are facing a 10.0-cm length of wire placed inside a uniform 2.0-T magnetic field directed up. A 10.0-A current is passed through the wire directed to the right, perpendicular to the magnetic field. Determine the direction and magnitude of the force on the wire.

What happens when charges move through a magnetic field?

• They experience a gravitational force
• They experience an electric force
• They experience a magnetic force
• They remain unaffected

What is the primary function of a geodynamo in Earth's structure?

• To regulate Earth's temperature
• To generate Earth's magnetic field through convection currents
• To maintain the solid state of the inner core
• To separate the inner and outer core

The outer core of the Earth is characterized by:

• Solid iron and nickel composition
• Gaseous state of matter
• Location between the crust and mantle
• Liquid iron-nickel composition between inner core and mantle

Which description accurately defines electrons?

• Positively charged particles in the nucleus
• Neutral particles with no charge
• Negatively charged subatomic particles
• Particles that only exist in free state

In the context of scientific measurements, magnitude refers to:

• The direction of a force
• The speed of a reaction
• The distance or quantity of something
• The time elapsed during an event

Which statement best describes proportional relationships?

• Two variables with equivalent ratios
• Two variables that are always equal
• Two variables that decrease together
• Two variables with no relationship

Iron is classified as:

• A non-metal in group 7
• A transition metal in group 8
• A noble gas in group 18
• An alkali metal in group 1

According to Coulomb's law, how does charge relate to electric field?

• The electric field decreases with increasing charge
• The electric field is proportional to the charge
• The electric field is independent of charge
• The electric field is inversely proportional to charge

What tool is used to determine the direction of a magnetic field in a current-carrying wire?

• Left-hand rule
• Right-hand rule
• Fleming's rule
• Maxwell's rule