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3 years ago

Which best describes a difference between electric current and static electricity

2 answers:

8 0

Static electricity is caused by the build up of charges on surfaces of objects while electric current is the constant flow of electrons along a conductor (the rate of flow of charge).

melomori [17]3 years ago

3 0

The question is missing its alternative. Here is the complete question.

Which best describes a difference between electric current and static electricity?

a. Electric current is continuous and static electricity is not continuous.

b. Static electricity is continuous and electric current is not continuous.

c. Electric current involves the movement of electrons, and stattic electricity involves the moment of protons.

d. Static electricity involves the movement of electrons and electric current involves the movement of protons.

Answer: a. Electric current is continuous and static electricity is not continuous.

Explanation: <em>Electric current</em> occurs when there is a flow of electrons (negative charges) in a circuit or conductor. The flow happens when there is a difference of potential between the ends of a circuit. The flow of electrons is non-stop so, electric current is continuous.

<em>Static electricity</em> is due to an imbalance of electric negative charges within or on an object's surface. This imbalance most likely happens by friction and consists of motionless isolated charges. For that reason, static electricity is not continuous.

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AURORKA [14]

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3 years ago

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What is the internal energy of 3.00mol of N2 gas at 25c?

Citrus2011 [14]

Answer:

18600j

Explanation:

It is given that,

Number of moles = 3

Temperature, T = 25°C = 25+273 = 298 K

The internal energy of N₂ gas is given by :

U=f\times nRTU=f×nRT

f is degrees of freedom. For diatomic gas, degree of freedom is equal to 5/2. So,

\begin{gathered}U=\dfrac{5}{2}\times 3\times 8.31\times 298\\\\U=18572.85\ J\end{gathered}

5×3×8.31×298

U=18572.85 J

U = 18600 J

So, the internal energy of the gas is 18,600 J

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2 years ago

A light bulb provides a resistance of 20 Ω to the 30 A current that runs through it. Determine the voltage of the battery in the

likoan [24]

Explanation:

Ohm's law:

V = IR

V = (30 A) (20 Ω)

V = 600 V

4 0

3 years ago

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Water on a smooth floor can made you slip, which means water is also a lubricant. Can you think of reasons why oil and grease an

DiKsa [7]

Answer:Water is easily evaporated, and oil and grease will not evaporate.

Explanation:

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3 years ago

a coin press creates a pressure of 3.20*10^8 Pa on a nickel of radius 0.0106 m. how much force does the press exert on the coin?

Naya [18.7K]

Answer:

1.13 x 10⁵N

Explanation:

Given parameters:

Pressure of the coin press = 3.2 x 10⁸ Pa

radius of the nickel coin = 0.0106m

Unknown:

Force of the press on coil = ?

Solution:

Our knowledge of pressure will help us solve this problem.

Pressure is defined as the force applied per unit area on a body.

Pressure = $\frac{force}{area}$

Force = Pressure x Area

Since the pressure is known;

Area of the coin = Area of a circle = π r²

where r is the radius of the coin;

Area of the coin = π x 0.0106² = 3.53 x 10⁻⁴m²

Force = 3.2 x 10⁸ x 3.53 x 10⁻⁴ = 1.13 x 10⁵N

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3 years ago