[SC F2] 7.3 Magnetism

What is the direction of a magnetic field?

• From the north pole to the south pole
• From the south pole to the north pole
• From the east pole to the west pole
• From the west pole to the east pole

Which of the following statements about magnets is TRUE?

• Same poles repel while opposite poles attract
• Same poles repel and opposite poles also repel
• Same poles attract and opposite poles also attract
• Same poles attract while opposite poles repel

Tags

NGSS.MS-PS2-3

What direction will a compass point to when hung freely?

• North - south

• East - west

What rule is used for determining the direction of the magnetic field based on the direction of the current in a straight conductor?

• Right-hand grip rule
• Left-hand grip rule
• Fleming's left-hand rule
• Fleming's right-hand rule

Tags

NGSS.HS-PS2-5

The area around the magnet with magnetic force is known as _______________.

• magnetic force

• magnetic domain

• magnetic field

• magnetic field lines

Which of the following is not the application of magnet and electromagnet?

• Rubber

• Compass

• Credit card

• Electric bell

The diagram shows the magnetic field lines of two bar magnets. P, Q, R and S are the magnetic field directions.

Which of P, Q, R and S is correctly drawn?

U - North

S- South

• P

• Q

• R

• S

What is the function of electromagnetic strips on credit cards and debit cards?

• To show the direction of poles

• To keep information

• To detect the kind of fingerprint

• To keep money

What will happen to the direction and pattern of the magnetic field if the electric current is reversed?

(You can choose more than one answer)

• Direction of magnetic field will change

• Direction of magnetic field will remain the same

• Pattern of magnetic field will change

• Pattern of magnetic field will remain the same

Device Y uses a magnet to assist its pointer to show the direction of the poles. What is Y?

• Credit card

• Magnetic lock

• Electric bell

• Compass