Introduction to Magnets

Multiple Choice

Which one is the not magnetic material?

• cobalt

• glass

• iron

• nickel

Multiple Choice

Which one can be obtained if we put 4 magnets on the table?

• a

• b

• c

• d

Multiple Choice

Find the direction of the magnetic field at point Y

• to the right

• to the left

• upward

• downward

Multiple Choice

Find the direction of the magnetic field at point O

• $$⊗$$

• $$⨀$$

• $$\rightarrow$$

• $$\leftarrow$$

Multiple Choice

What is the magnetic field strength at a distance of 4 cm from a long, straight wire carrying a current of 5 A?

• 1,5∙10^-5 Т

• 2,5∙10^-5 Т

• 3,5∙10^-5 Т

• 4,5∙10^-5 Т

Multiple Choice

If the current through the wire 1 is 2 А ток күші, аnd the current through the wire 2 is 4 А , distance d=2 сm, then find the magnetic field at point K

• 10 uТ

• 20 uТ

• 30 uТ

• 40 uТ