TS EAMCET · Physics · Magnetic Effects of Current
A metal disc of radius rotates with a constant angular speed of about its axis. The potential difference between the centre and the rim of the disc under a uniform magnetic field directed perpendicular to the disc, is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
Induced emf due to a rotating metallic disc in uniform magnetic field B is given by expression, e=12Bωa2 where, ω= angular speed and a= radius of the disc. Given, radius of metallic disc a=10 cm, angular speed of metallic disc, ω=200 rad sec-1 and…
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