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mamaluj [8]
4 years ago
12

A 15-turn circular wire loop with a radius of 3.0 cm is initially in a uniform magnetic field with a strength of 0.5 T. The fiel

d decreases to zero over a time of 0.10 sec. What is the induced emf?
Physics
1 answer:
miskamm [114]4 years ago
8 0

Answer:

0.212V

Explanation:

The induced emf in circular loop is \epsilon=-d\frac{\phi_B}{dt}=-NA\frac{dB}{dt}

N = Number of loops = 15

A = Cross sectional Area = \pi0.03^{2} = 0.0009\pi

dB = change in magnetic Field = 0-0.5 = -0.5

dt = time taken = 0.1sec

\epsilon=-15*0.0009\pi *\frac{-0.5}{0.1} = 0.212V

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3 years ago
Which two statements describe a situation that would result in a change to landforms on Earth’s surface.
Lilit [14]

Answer:

A. A volcano erupts on a small island.

C. Flooding loosens dirt and rocks along a hillside.

Explanation:

Tectonic activities and mass wasting will greatly lead to a change in land forms on earth's surface.

When a volcano erupts on a small island, a change in landform often results. Also, flooding can lead to changes in land form.

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7 0
4 years ago
A step-up transformer has 50 turns on its primary coil and 2000 turns on its secondary
ryzh [129]

Answer:

Vs= 6000 v

Ip=9.6 A

Explanation:

Ns/Np = Vs/Vp

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7 0
3 years ago
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zepelin [54]

Answer:

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Explanation:

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Since gravity acting on both objects is equal, they have no acceleration relative to one another.

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