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4 years ago

A current of 5 A is flowing in a 20 mH inductor. The energy stored in the magnetic field of this inductor is:_______

Physics

1 answer:

Kipish [7]4 years ago

7 0

Answer:

C. 0.25J

Explanation:

Energy stored in the magnetic field of the inductor is expressed as E = 1/2LI² where;

L is the inductance

I is the current flowing in the inductor

Given parameters

L = 20mH = 20×10^-3H

I = 5A

Required

Energy stored in the magnetic field.

E = 1/2 × 20×10^-3 × 5²

E = 1/2 × 20×10^-3 × 25

E = 10×10^-3 × 25

E = 0.01 × 25

E = 0.25Joules.

Hence the energy stored in the magnetic field of this inductor is 0.25Joules

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Where,

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From the given values the angular velocity would be

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$E = \frac{1}{2} (0.4)(26.31)^2(3*10^{-2})^2$

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$v = A\omega$

$v = (3*10^{-2})(26.31)$

$v = 0.7893m/s$

PART C) Finally, the relationship between linear acceleration and angular velocity is subject to

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$a = (3*10^{-2})(26.31)^2$

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3 years ago

What is the change in velocity of a 22-kg object that experiences a force of 15 N for

vagabundo [1.1K]

Answer:

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Acceleration:

${ \tt{15 = (22 \times a)}} \\ { \tt{a = \frac{15}{22} \: {ms}^{ - 2} }}$

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Change = v - u:

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3 years ago

A sprinter has a mass of 80kg and a kinetic energy of 4000 j. What is the sprinter's speed

JulijaS [17]

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3 years ago

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Brut [27]

Answer:

Work is best defined as a force exerted on a body to cause it move over a certain distance.

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2 years ago

In a Hydrogen molecule there are a total of four charges, 2 protons in the two nuclei, and 2 electrons. How many unique charge-p

lutik1710 [3]

Answer:

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Explanation:

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