A circular metallic disc is placed with its plane perpendicular to a uniform magnetic field of flux density B. The disc has a radius of 0.2 m and is rotated at 5 revolutions per second about an axis through its center perpendicular to its plane. The e.m.f between the center and the rim of the disc is balanced by the potential difference across a 10 Q resistor when carrying a current of 1 mA. Calculate the magnitude of the magnetic field strength. Provide your answer in milliteslas (mT).
A circular metallic disc is placed with its plane perpendicular to a uniform magnetic field of flux density B. The disc has a radius of 0.2 m and is rotated at 5 revolutions per second about an axis through its center perpendicular to its plane. The e.m.f between the center and the rim of the disc is balanced by the potential difference across a 10 Q resistor when carrying a current of 1 mA. Calculate the magnitude of the magnetic field strength. Provide your answer in milliteslas (mT).
Chapter11: Magnetic Forces And Fields
Section: Chapter Questions
Problem 11.3CYU: Check Your Understanding A straight, flexible length of copper wire is immersed in a magnetic field...
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Question
![A circular metallic disc is placed with
its plane perpendicular to a uniform
magnetic field of flux density B. The
disc has a radius of 0.2 m and is
rotated at 5 revolutions per second
about an axis through its center
perpendicular to its plane. The e.m.f
between the center and the rim of
the disc is balanced by the potential
difference across a 10 Q resistor
when carrying a current of 1 mA.
Calculate the magnitude of the
magnetic field strength. Provide your
answer in milliteslas (mT).
Answer:
Choose... +](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbf7339ab-bdd1-42c4-9808-a42a252b37fc%2Fd446edc1-04d2-4ee2-a5f2-1703303ca776%2Ft94m95_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A circular metallic disc is placed with
its plane perpendicular to a uniform
magnetic field of flux density B. The
disc has a radius of 0.2 m and is
rotated at 5 revolutions per second
about an axis through its center
perpendicular to its plane. The e.m.f
between the center and the rim of
the disc is balanced by the potential
difference across a 10 Q resistor
when carrying a current of 1 mA.
Calculate the magnitude of the
magnetic field strength. Provide your
answer in milliteslas (mT).
Answer:
Choose... +
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