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Sergio039 [100]
3 years ago
9

Find the current is in the circuit? ​

Physics
1 answer:
rosijanka [135]3 years ago
6 0

Answer:

i = 1.2 [amp].

Explanation:

In order to find the current in the circuit, we must perform a sum of voltages equal to zero, around the mesh.

∑V = 0

Let's take the direction of the current as shown in the drawing Clockwise.

-3+(i*2)+(i*1)+(i*2)+9=0\\6+(5*i)=0\\5*i = - 6\\i = - 1.2[amp]

Note: The negative sign means that the current moves in a counterclockwise direction.

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Starting from rest, a disk rotates about its central axis with constant angular acceleration. In 1.00 s, it rotates 21.0 rad. Du
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21.0\,\mathrm{rad}=\dfrac12\alpha(1.00\,\mathrm s)^2\implies\alpha=42.0\dfrac{\rm rad}{\mathrm s^2}

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\omega_{\rm avg}=\dfrac{\left(42.0\frac{\rm rad}{\mathrm s^2}\right)(1.00\,\mathrm s)}2=42.0\dfrac{\rm rad}{\rm s}

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