Magnetic Force on a Wire

What is the relationship between the magnetic field and the force on a wire?

• A) Directly proportional

• B) Inversely proportional

• C) No relationship

• D) Exponentially proportional

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What is used to determine the direction of the force on a wire in a magnetic field?

• Left-hand rule

• Right-hand rule

• Thumb rule

• Index rule

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

The magnetic force on opposite wire segments produces a net torque around an axis through the center of the loop. True or False?

• True

• False

Tags

NGSS.HS-PS3-5

Fill in the blank: A torque is produced on each side of the loop, resulting in a net torque that causes the loop to ___.

• stop

• rotate

• shrink

• expand

Fill in the blank: The simple motor diagram shows a loop of wire between two ________ poles.

• Similar

• Opposite

• Neutral

• Stationary

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which part of the hand points in the direction of the current in the right-hand rule?

• Thumb

• Index finger

• Middle finger

• Palm

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What is the main cause of Earth's magnetic field?

• Electric currents in the outer core

• Heat from the sun

• Earth's rotation

• Gravitational pull

Tags

NGSS.HS-PS2-5

Convection in the outer core results from heat lost to the ________.

• inner core

• mantle

• crust

• atmosphere

Tags

NGSS.HS-ESS2-3

What is the significance of alternating magnetic polarities found in crustal rocks?

• They indicate the presence of iron

• They suggest multiple past reversals of Earth's magnetic field direction

• They show the age of the rocks

• They are caused by ocean currents.

What does the graph of calculated magnetic profile assuming seafloor spreading show?

• Constant magnetic polarity

• Alternating magnetic polarity

• No magnetic changes

• Only normal polarity

Tags

NGSS.HS-ESS1-5