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777dan777 [17]
3 years ago
13

A flat coil of wire consisting of 20 turns, each with an area of 50 cm2, is positioned perpendicularly to a uniform magnetic fie

ld that increases its magnitude at a constant rate from 2.0 T to 6.0 T in 2.0 s. If the coil has a total resistance of 0.40 Ω, what is the magnitude of the induced current
Physics
1 answer:
Nutka1998 [239]3 years ago
5 0

Answer:

i = 0.5 A

Explanation:

As we know that magnetic flux is given as

\phi = NBA

here we know that

N = number of turns

B = magnetic field

A = area of the loop

now we know that rate of change in magnetic flux will induce EMF in the coil

so we have

EMF = NA\frac{dB}{dt}

now plug in all values to find induced EMF

EMF = (20)(50 \times 10^{-4})(\frac{6 - 2}{2})

EMF = 0.2 volts

now by ohm's law we have

current = \frac{EMF}{Resistance}

i = \frac{0.2}{0.40} = 0.5 A

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Answer:

Approximate escape speed = 45.3 km/s

Explanation:

Escape speed

        v=\sqrt{\frac{2GM}{R}}

Here we have

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Substituting

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6 0
3 years ago
How much time will it take to perform 440 joule of work at a rare of 11 w?​
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Answer:

40sec

Explanation:

Data

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time = ?

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= 40sec

7 0
2 years ago
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Brilliant_brown [7]

Answer:

d)energy

Explanation:

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ch4aika [34]

Answer:

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The lost energy became heat and sound energy.

Explanation:

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