Induction

Which law states that the induced e.m.f. and the current constantly oppose the source that produces them?

• Lenz's

• Charle's

• Faraday's

• Coulomb's

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What is the contribution of Joseph Henry to the world of electromagnetism?

• Discovered electrons

• Discovered the electromagnetic phenomenon of self-inductance

• Formulated Lenz's law

• Concluded that lightning contains electricity

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A current produced by an induced e.m.f. is called?

• Induced current

• Magnetic current

• Current flow

• Current

Tags

NGSS.HS-PS2-5

What is/are the factor/s involved in Faraday's Law?

• Time

• Flux

• Number loops

• All of the choices

Which of the following is a true statement?

• a. Hans Orsted and Michael Faraday competed to be the first scientist to describe electromagnetic induction

• b. Orsted and Faraday were colleagues who worked together to discover electromagnetic induction

• c. Orsted stole Faraday's ideas about electromagnetic induction, leading to controversy d. Faraday built on Orsted's discoveries to describe electromagnetic induction

• d. Faraday built on Orsted's discoveries to describe electromagnetic induction

When an electric current runs through a wire, a magnetic field is induced …

• a. Around the wire

• b. Parallel to the wire

• c. Under the wire

• d. through the wire

Tags

NGSS.HS-PS2-5

How would you reverse the direction of the current flowing through the coil in Faraday's experiment?

• Use a magnet of opposite polarity

• Move the magnet through the coil faster

• Reverse the magnet's direction

• Use a larger magnet

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What are two ways to induce (begin) a current in a solenoid?

• Moving a bar magnet inside a solenoid

• Moving a solenoid inside a magnetic field

• Setting a ferromagnetic material near a solenoid

• Resting a magnet in a solenoid

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which scientist is credited with the discovery of electromagnetic induction?

• Michael Faraday

• James Clerk Maxwell

• Nikola Tesla

• Thomas Edison

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What is the unit of inductance?

• Henry

• Tesla

• Farad

• Ohm