3 years ago

Where is the magnet that causes Earth’s magnetic field? What is this magnet made of?

Physics

1 answer:

Y_Kistochka [10]3 years ago

6 0

Answer:

The magnetic field of Earth is created by currents of electricity that flow in the molten center.

Explanation:

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An electric current in a conductor varies with time according to the expression i(t) = 110 sin (120πt), where i is in amperes an

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As we know that current is defined as rate of flow of charge

$i = \frac{dq}{dt}$

so by rearranging the equation we can say

$q = \int i dt$

here we know that

$i(t) = 110 sin(120\pi t)$

here we will substitute it in the above equation

$q = \int 110 sin(120\pi t) dt$

$q = 110 [- \frac{cos(120\pi t)}{120\pi}]$

now here limits of time is from t = 0 to t = 1/180s

so here it will be given as

$q = \frac{110}{120\pi}( -cos0 + cos(\frac{2\pi}{3}))$

$q = 0.44 C$

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julsineya [31]

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