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The Hall Effect

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Questions and Answers

Who discovered the Hall effect?

James Clerk Maxwell

Edwin Hall (correct)

Johns Hopkins University

Baltimore, Maryland

What is the Hall effect?

Production of a potential difference in the direction of an electric current

Production of a potential difference across an electrical conductor transverse to an electric current and an applied magnetic field (correct)

Production of a potential difference along the length of an electrical conductor

Production of a potential difference due to temperature difference in a conductor

What does the Hall coefficient represent?

Ratio of induced electric field to the product of current density and applied magnetic field (correct)

Ratio of induced magnetic field to the product of current density and applied electric field

Ratio of induced current to the product of magnetic field and applied electric field

Ratio of induced current to the product of electric field and applied magnetic field

What does the Hall coefficient depend on?

Type, number, and properties of the charge carriers in the current Signup and view all the answers

When was the modern theory of electromagnetism systematized?

1861-1862 Signup and view all the answers

How did Meißner and Ochsenfeld discover the Meissner effect?

By measuring the magnetic field distribution outside superconducting tin and lead samples Signup and view all the answers

What is the Meissner effect?

The expulsion of a magnetic field from a superconductor during its transition to the superconducting state Signup and view all the answers

What happens to the interior magnetic fields of superconducting samples during the Meissner effect?

They are cancelled nearly all Signup and view all the answers

What does the Meissner effect demonstrate about superconductors?

They are more than just perfect conductors Signup and view all the answers

When does the Meissner state break down?

When the applied magnetic field is too strong Signup and view all the answers