Electric current is _____. the continuous flow of atoms in a conductor the continuous flow of static electricity in a conductor the continuous flow of electric charges in a conductor a staggered flow of charges in a conductor
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Answer: The correct answer is the continuous flow of electric charges in a conductor.
Explanation:
Electric current is defined as the continuous flow of electric charges through a conductor. Direction of the electric current is opposite to the flow of electrons. It is represented by a symbol 'I' and its S.I. unit is Amperes.
Its value depends on the voltage and resistance. The equation representing the relationship between current, voltage and resistance is given by Ohm's Law, which is:
where,
V is the voltage
I is the current
R is the resistance
Hence, the correct answer is the continuous flow of electric charges in a conductor.
Electric current is: C) the continuous flow of electric charges in a conductor.
The movement or flow of electric charges across a conducting media, such as a metal wire, is known as electric current. The mobility of electrons within the conductor is what causes the flow of charges. The flow of electric charges in the majority of conventional electrical circuits is from the negative terminal, where extra electrons build up, to the positive terminal, where there are insufficient electrons.
It's crucial to understand that the passage of atoms in a conductor is not what constitutes electric current. While atoms may vibrate or move slightly within a conductor, the passage of electrons is the main movement in charge of electric current.
Static electricity does not continuously flow through a conductor, and neither does electric current. An imbalance of electric charges on a material's surface is referred to as static electricity, which normally doesn't entail a constant flow or movement of charges.
A staggered passage of charges in a conductor is not how electric current behaves either. Charges flow continuously, uniformly, and orderly through the conductor in a steady electric current.
In conclusion, electricity and electrical circuits are based on the continuous flow of electric charges, typically electrons, in a conductor. Electric current is defined as this flow.
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Which are the reactants in this combustion reaction? _____ > CO2 2H2O Select one of the options below as your answer:a. CH4 2O2 b. 2H2CO3 c. CO2 2H2O
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B. atom
C. element
D. mineral
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Answers
(2) decreased temperature and decreased pressure
(3) increased temperature and increased pressure
(4) increased temperature and decreased pressure
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The changes in temperature and pressure will cause this sample to behave more like an ideal gas by increased temperature and decreased pressure. Hence option 4 is correct.
What is ideal gas?
Ideal gas is defined as a gas that physically behaves in accordance with the ideal, or general, gas law, which is a certain idealized relationship between pressure, volume, and temperature. The ideal gas law can be used to calculate the volume of gases that are produced or used. The ideal-gas equation is frequently used in chemical equations to convert between volumes and molar values.
Ideal gases are those that have little volume and no intermolecular forces. Real gas must have intermolecular attractions and volume in order to exist. At low pressure and high temperature, a genuine gas will act as it should.
Thus, the changes in temperature and pressure will cause this sample to behave more like an ideal gas by increased temperature and decreased pressure. Hence option 4 is correct.
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Answer : The correct option is, (4) increased temperature and decreased pressure
Explanation :
The conditions for ideal gas are, it has no intermolecular attractions and have negligible volume.
The ideal gas equation is,
The conditions for real gas are, it has intermolecular attractions and have volume.
The real gas equation is,
A real gas behave ideally at high temperature and low pressure conditions.
From the given options, option (4) increased temperature and decreased pressure is the correct option.
Hence, increased temperature and decreased pressure this sample to behave more like an ideal gas.
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The universe is expanding is as the galaxies are moving away from each other, and the temperature of the universe is decreasing. Therefore, option (1) is correct.
How is the universe expanding?
First scientists theorized that as the universe is expanding and its temperature has gradually decreased. The universe has been expanding since the Big Bang and, as it expands, it’s temperature cooling down.
The temperature of the universe can be measured by looking at the cosmicmicrowave background (CMB). The temperature an be estimated by the thermal radiation left over from the BigBang.
The CMB scientists have been investigating that its temperature has been dropping off gradually as our universe expands out and the current average temperature of the cosmos is estimated about 2.73 Kelvin.
The point of the Big Bang from the Big bang theory is described as densesingularity and infinitely hot. The energy from the Big Bang distributed as the universe expands and gives the cooling effect.
But new research suggests otherwise that the temperature of the earth is actually increasing as it expands. Therefore, the temperature of universe increasing with its expansion.
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if we change these values into Kelvin then
melting point of water is 273.15 K and boiling point is 373.15 kelvin..
for melting it is necessary for ice to get warm so it attains heat 10 F to 32 F...
then ice melts but during this temperature remains constant..
the energy required for melting is 333 kJ/Kg K
then water is warmed at 305 Kelvin.... :)