Inv5.Exp3 Test

A square loop with sides of length 0.80 m is oriented parallel to the x- and z-axes. A uniform magnetic field passes through the loop. The field is B=(0.50 T)x^+(0.60 T)ŷ. Determine the magnetic flux through the loop.

In the light-hand analogy for magnetic flux, what does the size of the shadow represent?

• The magnetic field strength
• The surface area
• The magnetic flux
• The light intensity

When a magnet is pulled away from a wire loop, what happens to the external magnetic field?

• It remains constant
• It increases in strength
• It gets smaller
• It reverses direction

Tags

NGSS.HS-PS2-5

How can magnetic flux be changed without moving a magnet?

• By changing the temperature of the wire
• By changing the wire's resistance
• By changing the area of the wire loop
• By changing the wire's material

What does an area vector represent in electromagnetic induction?

• The direction of current flow only
• The magnitude and direction perpendicular to the area
• The strength of the magnetic field only
• The resistance in the circuit

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What is alternating current (AC)?

• Current that flows in one direction only
• Current that maintains constant magnitude
• Current that periodically reverses direction and changes magnitude
• Current that flows in parallel circuits only

How does the magnetic field produced by a solenoid relate to the current supplied?

• It is inversely proportional
• It is proportional
• There is no relationship
• It varies randomly

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What happens to the induced current when the external magnetic field increases?

• Creates a field supporting the increase
• Creates a field opposing the increase
• Remains unchanged
• Disappears completely

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What happens when you rotate a wire loop in a magnetic field?

• The magnetic field strength changes
• The magnetic flux remains constant
• The magnetic flux changes
• The magnetic field disappears

What type of current is most effective for creating a continuously changing magnetic field?

• Direct current (DC)
• Alternating current (AC)
• Pulsed direct current
• Static electricity

Tags

NGSS.HS-PS2-5