Inv5.Exp2 Text B (pg.220-224)

What produces a gravitational field?

• Mass

• Magnetic field

• Electric current

• Charge

According to Coulomb's law, what is the electric field proportional to?

• Current

• Magnetic field

• Mass

• Charge

What law states that the magnitude of the magnetic field is proportional to the current?

• Newton's law of universal gravitation

• Coulomb's law

• Biot-Savart law

• Ohm's law

Which rule is used to determine the direction of the magnetic field for a current-carrying wire?

• Left-hand rule

• Right-hand rule

• Thumb rule

• Fleming's rule

What is a solenoid?

• A magnetic field sensor

• A device that measures current

• A type of battery

• A long current-carrying wire wound into a helical coil

What does the word 'solenoid' originate from?

• Latin for 'coil-shaped'

• Greek for 'pipe-shaped'

• German for 'current-coil'

• French for 'wire-loop'

What is the primary use of solenoids?

• To conduct electricity

• To produce electromagnets

• To generate electric current

• To measure magnetic fields

What are the three components of Earth's geodynamo?

• Electric currents, crystallization of iron, and solar wind

• Crystallization of iron, solar wind, and magnetic field lines

• Magnetic field lines, solar wind, and Earth's rotation

• Convection in the outer core, electric currents, and Earth's rotation

Where is the equation for a loop of wire valid?

• At the center of the loop

• At the edges of the loop

• Farther away from the loop

• Inside the loop

What rule can be used to determine the field direction for a loop?

• Left-hand rule

• Right-hand rule

• Thumb rule

• Index finger rule