YourStory | First-Person K12 Education

What is the primary source of a magnetic field?

Electric currentsStatic electricityGravitational forcesNuclear reactions

Which material is commonly known as a ferromagnetic material?

CopperIronAluminumGold

What is the effect of increasing the current in a coil of wire on its magnetic field strength?

Magnetic field strength decreasesMagnetic field strength remains the sameMagnetic field strength increasesMagnetic field strength becomes unpredictable

Assessment

What is the primary source of a magnetic field?

Which material is commonly known as a ferromagnetic material?

What is the effect of increasing the current in a coil of wire on its magnetic field strength?