Physics Middle School

Which choice most accurately defines resistance and voltage of a circuit?

Resistance can be defined as the potential difference between two points in a circuit, while voltage is the amount of electrons moving through a point in a circuit every second.

Voltage can be defined as the potential difference between two points in a circuit, while resistance is the amount of electrons moving through a point in a circuit every second.

Voltage can be defined as the potential difference between two points in a circuit, while resistance opposes the flow of electrons in a circuit.

Resistance can be defined as the potential difference between two points in a circuit, while voltage opposes the flow of electrons in a circuit.

Answers

Answer 1

Answer:

Resistance can be defined as the potential difference between two points in a circuit, while voltage is the amount of electrons moving through a point in a circuit every second.

Explanation:

Related Questions

What three colors can be combined to produce any color within the visible spectrum​

Answers

Answer:

red, green, and blue.

Explanation:

The primary colors of light that combine to produce any color within the visible spectrum are red, green, and blue.

The three colors that can be combined to produce any color within the visible spectrum are green, red & blue. Fun fact; these are also the only colors that are shown on your screen are these three. All the tiny pixels are composed of three small dots of compounds called phosphors surrounded by a black mask.

Which is equal to a temperature of 20°C?
20°F
68°F
36°F
32°F

Answers

The correct answer would be 68°F because (20°C × 9/5) + 32 = 68°F.

A temperature of 20 degree Celsius is equal to 68 degree Fahrenheit temperature. Therefore, option b is correct.

What are temperature units ?

Temperature is a physical unit which measures the overall heat of an object. The SI unit of temperature is Kelvin (K) and the commonly used unit is degree Celsius (°C).

Other unit of temperature is Fahrenheit  (°F). These units can be interconverted between each other with the specific relation between them.

We know that zero degree Celsius is 32  Fahrenheit . Let T be the temperature in degree Celsius,

then, (T° × 9/5) + 32 = T in °F.

Given, temperature = 20 °C.

This temperature can be converted to °F as follows:

(20 °C × 9/5) + 32 = 68 °F.

Therefore, 20 °C is equal to a temperature of 68 °F.

Find more on Fahrenheit temperature:

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a ball is projected with a certain angle with initial velocity u. it covers horizontal range R. With what initial velocity it must be projected keeping the angle of projection same so its horizontal range becomes 2.25R

Answers

Answer:

1.5 u

Explanation:

The range equation is:

R = u² sin(2θ) / g

When u = v, R = 2.25 R.

2.25 R = v² sin(2θ) / g

2.25 u² sin(2θ) / g = v² sin(2θ) / g

2.25 u² = v²

1.5 u = v

How many hydrogen atoms are there in the following compound: 4CHA (2 points)
Select one:
a 4
b. 8
c. 12
d. 16

Answers

Answer:

4

Explanation:

The number 4 that is infront of the CHA(4CHA) means to say that there are 4C 4H and 4A

Tip:the number infront of a equation is call the coefficient

Other Questions
Historians still dont agree on the exact cause of the Salem witch trials. Several theories have been put forward explaining the motive behind the accusations: Economic Causes In Salem, some families were very rich, while others were poor. This disparity led to jealousy among some of the people. Several families were engaged in property disputes. Some of the accused were rich. If convicted, they would lose their land and property, which could then be bought by others. Suggesting that a person was a witch was one way of obtaining that persons property. Some of the accused were poor. They were outsiders, and wealthier townspeople looked down on them. Accusing these people of being witches was one way of eliminating them from the village. Political Causes In the recent past, there had been several disputes over who should govern the Massachusetts Colony. The colonists had also endured some violent conflicts with American Indians. These events created political turmoil and instability. People were upset, and they blamed their problems on a lack of effective leadership. The leaders, in turn, were eager to see others take the blame for social problems. Accusing people of witchcraft made the accused responsible for social and political problems. The supposed witches could be blamed for whatever was wrong with society. Leaders did not have to take responsibility for mistakes or try to make changes. Intellectual Causes People knew little about science in those days. They were afraid of things they didnt understand. People didnt know about the causes of disease. If a person became sick, they believed it might be because of a curse. Witchcraft was one way of explaining the unknown. Psychological Causes Most of the accusers were young women and girls. At that time, girls were supposed to be quiet and obedient. They had little power in society. Accusing others of witchcraft may have made them feel powerful. Some girls and women may have been under pressure to make up stories about witchcraft. Powerful people who had something to gain from seeing certain people in the town convicted of witchcraft may have pressured these women into testifying. Mass hysteria may have also played a role. Mass hysteria happens when large numbers of people respond to real or imagined threats in an emotional and unreasonable way. They become frightened, angry, and even violent. During times of mass hysteria, people may engage in mob violence, hunting down, shaming, and sometimes even killing those they believe are responsible for their troubles. The power of suggestion can contribute to mass hysteria. When one person claims to see, hear, or feel something, others may believe it to be true and swear they hear, see, or feel the same thing without knowing why. For instance, if you see your friends scratch themselves or yawn, you may start scratching or yawning too, even if you arent itchy or tired. 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