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3 years ago

Fill in the blank

Physics

1 answer:

lara [203]3 years ago

4 0

You haven't told us what scale the 34° was read from.

-- If it's 34° on a Fahrenheit thermometer then the temperature is 274.26 Kelvins.

-- If it's 34° on a Celsius thermometer, then the temperature is 307.15 Kelvins.

-- If it's 34° absolute, then the temperature is 34 Kelvins.

-- If it's 34° on a Reaumur thermometer then the temperature is 315.65 Kelvins.

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Answer with Explanation:

We are given that

Area of loop= $(20\times 20) cm^2=400\times 10^{-4} m^2$

$1 cm^2=10^{-4} m^2$

Resistance, R= $0.1\Omega$

B= $4t-2t^2$

We know that magnetic flux

$\phi=BA$

Emf , $E=\mid \frac{d\phi}{dt}\mid =\mid\frac{d(BA}{dt}\mid =\mid A\frac{dB}{dt}=400\times 10^{-4}\times \frac{4t-2t^2}{dt}\mid =\mid400\times 10^{-4}\times(4-4t)\mid$

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Current, $I=\frac{\mid 400\times 10^{-4}(4-4t)\mid }{0.1}=1.6\mid (1-t)\mid$

Substitute t=0 s

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Substitute t=1 s

Then, I= $1.6\mid (1-1)\mid$ =0

Substitute

t=2 s

Current, I= $1.6\mid(1-2)\mid$ =1.6 A

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