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scoundrel [369]
3 years ago
15

Think of the rotating disk as a series of concentric rotating rings. Each ring acts as a circular current loop that produces a m

agnetic field at the center of the disk. Then integrate over all rings to find the total field. What is the expression for the magnetic field at the center of the single circular loop of radius r carrying current I
Physics
1 answer:
ioda3 years ago
8 0

Answer:

Explanation:

Let the current in the coil is i and the radius of the coil is r.

The magnetic field due to the single loop is given by

B = \frac{\mu_{0}}{4\pi}\frac{2i}{r}

where, i is the current in the circular loop and r is the radius of the loop. The direction of the magnetic field at the centre of loop is given by the Maxwell's right hand thumb rule.  

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<h3>What is negative angular acceleration?</h3>
  • A particle that has a negative angular velocity rotates counterclockwise.
  • Negative angular acceleration () is a "push" that is hence counterclockwise.
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Let t be the time taken to stop.

ω = 0 rad/s

Use the first equation of motion for rotational motion

ω = ωo + α t

0 = 10.5 - 2 x t

t = 5.25 second

To learn more about angular acceleration, refer to:

brainly.com/question/21278452

#SPJ4

7 0
1 year ago
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Explanation:

it's a unit used to measure charge (C)

1C=1000millicoulombs

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