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3 years ago

a current of 250 amps is flowing through a copper wire with resistance of 2.09 x 10^4 ohms. what is the voltage

1 answer:

7 0

V = I · R

Voltage = (current) · (Resistance)

Voltage = (250 A) · (2.09 x 10⁴)

Voltage = 5,225,000 volts .

I may be out of line here, but I'm pretty sure
that the resistance is 2.09 x 10⁻⁴ .
Then

Voltage = 0.05225 volt (not 5 million and something)

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3 years ago

The Moon orbits Earth in an average of p = 27.3 days at an average distance of a =384,000 kilometers. Using Newton’s version of

Korvikt [17]

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3 years ago

A glider is gliding through the air at a height of 416 meters with a speed of 45.2 m/s. The glider

julia-pushkina [17]

There's not enough information to find an answer.

I think the idea here is that in descending (416 - 278) = 138 meters,
the glider gives up some gravitational potential energy, which
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3 years ago

An 8.00- W resistor is dissipating 100 watts. What are the current through it and the difference of potential across it?

hjlf

Answer:

I= 3.5 amps

Explanation:

Step one:

given data

rating of resistor R= 8 ohms

power P= 100W

Required

The current I

Step two

Yet this power is also given by

$P = I^2R$

make I subject of the formula we have

$I= \sqrt{\frac{P}{R} }$

substitute

$I= \sqrt{\frac{100}{8} }\\\\I=\sqrt{12.5}\\\\I= 3.5 amps$

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3 years ago