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jarptica [38.1K]
3 years ago
8

Rearrange the equation current = voltage/resistance to express resistance in terms of current and voltage. Then solve the follow

ing: A certain device in a 130-V circuit has a current rating of 10 A . What is the resistance of the device (how many ohms)?
Physics
1 answer:
MissTica3 years ago
3 0

Answer:

Resistance, R = 13 ohms

Explanation:

The Ohm's law gives the direct relationship between the voltage, current and the resistance of the device. The relation is as follows :

V=IR

Where

I is the current

r is the resistance

The value of resistance is given by :

R=\dfrac{V}{I}

According to given data,

Voltage of the circuit, V = 130 V

Current rating of the circuit, I = 10 A

Resistance of the device,

R=\dfrac{130\ V}{10\ A}

R = 13 ohms

So, the resistance of the device is 13 ohms. Hence, this is the required solution.

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kykrilka [37]

To solve this problem we will use the concepts related to the electromagnetic force related to the bases founded by Coulumb, the mathematical expression is the following as a function of force per unit area:

\frac{F}{L} = \frac{kl_1l_2}{d}

Here,

F = Force

L = Length

k = Coulomb constant

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d = Distance

Force of the wire one which is located along the line y to 0.47m is 305*10^{-6}N/m then we have

l_2 = \frac{F}{L} (\frac{d}{kl_1})

l_2 = (305*10^{-6}N/m)(\frac{0.470m}{(2*10^{-7})(25A))})

l_2 = 28.67A

Considering the B is zero at

y = y_1

\frac{kI_2}{2\pi y} =\frac{kI_1}{2\pi y_1}

\frac{(4\pi*10^{-7})(28.67)}{2\pi (y_1)} = \frac{(4\pi *10^{-7})(25)}{2\pi (0.47-y_1)}

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Therefore the value of y for the line in the plane of the two wires along which the total B is zero is 0.25m

5 0
4 years ago
A sample of chloroform is found to contain 12.0 g of carbon, 106.4 g of chlorine, and 1.01 g of hydrogen. If a second sample of
GREYUIT [131]

Given:

Sample 1:

Chloroform is CHCl_{3}

12 g Carbon

1.01 g Hydrogen

106.4 g Cl

Sample 2:

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Solution:

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12 + 1.01 +106.4 =119.41 g

Now, for the total mass of chloroform in sample 2:

mass of chloroform \times\frac{given mass of carbon}{mass of carbon atom}

mass of chloroform = 119.41 \times\frac{30}{12} = 298.53 g

6 0
3 years ago
?/1 Jorge traveled 5 miles north to school. He then traveled 3 miles west to the store. Then he left the store and traveled 5 mi
aleksklad [387]

Answer:

He's 3 miles west of school.

Explanation:

He went 5 miles up and 5 miles down which means that he really didn't go up or down.  In between that, he went 3 miles west so if the 5 milers don't count, this puts him at 3 miles west of school.

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3 years ago
The loudness of a sound will be determined by its
adoni [48]

Answer:

By its amplitude.

Explanation:

loudness is sound intensity & intensity depends on square of amplitude. for example higher the amplitude higher the intensity which means higher the loudness.

4 0
3 years ago
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Answer:

Freefall is a special case of motion with constant acceleration because acceleration due to gravity is always constant and downward. This is true even when an object is thrown upward or has zero velocity.

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4 0
3 years ago
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