3 years ago

How can I find the vertical velocity

Physics

1 answer:

Rufina [12.5K]3 years ago

5 0

Answer:

The final vertical velocity is given by Equation

Explanation:

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A circuit is set up such that it has a current of 8 A. What would be the new current if the resistance was increased by a factor

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Answer:

4 A

Explanation:

The relationship between current, voltage and resistance in a circuit is given by Ohm's law:

$V=RI$

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V is the voltage

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I is the current

The equation can also be rewritten as

$I=\frac{V}{R}$

from which we see that the current is inversely proportional to the resistance, R.

In this problem, the initial current is I = 8 A. Then the resistance is doubled:

R ' = 2R

So the new current is

$I'=\frac{V}{R'}=\frac{V}{2R}=\frac{1}{2}(\frac{V}{R})=\frac{I}{2}=4 A$

so the current is halved.

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