physics

26問 • 1年前

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問題一覧

in joules is a total stored energy of an entire object

Potential energy

also called voltage a stored energy per charge

Electric potential

Alternative names for electric potential

Voltage, Potential difference

It is the energy that is needed to move an electric charge against an electric field.

Electric Potential Energy

It is the amount of work needed to move an electric charge from its reference point to specific point on electric Field

Electric Potential

difference in electric potential between two points in a field

Potential difference

U=k q/r - is the property of points in space.

Electric potential energy

Electric potential is closely related to electric field which can facilitate electric-field calculations The potential V at any point in an electric field is defined as the potential energy U per unit charge associated with a test charge q at the point

Voltage

is thus defined to be the change in potential energy of a charge q moved from A to B, divided by the charge. Units of potential difference are joules per coulomb, given the name volt (V) after Alessandro Volta.

VB-VA

the ____ does the _____ to produce the ____

Field, Work, Acceleration

is the rate of flow of electrons in a conductor. The SI Unit of electric current is the Ampere or Amps. The S.I symbol is in capital A.

Electric current

is from negative to positive terminal. Electrons are negatively charged and are therefore attracted to the positive terminal as unlike charges attract.

Electron flow

2 types of electric curren

Alternating current (AC), Direct current (DC)

measured in ampere. One ampere of current represents one coulomb of electric charge moving past a specific point in one second.

Electric current

-So we can say that near the plate the electrical potential is high and far from the plate, the electrical potential is low.

A positively charge plate

So we can say that near the negative plate, the electrical potential is low, and further from the negative plate the electrical potential is high.

A negatively charge plate

He discover how electricity works

Alessandro volta

like pressure in a water pipe More voltage means more pressure. More pressure means more water can flow, More Voltage means more electrons can flow

Voltage

demonstrated the magnetic effect based on the direction of current.

Andre Marie Ampere

Resistance is a measure of the opposition to current flow in an electrical circuit. Current Resistance is measured in ohms, symbolized by the Greek letter omega (horse shoe symbol)

Georg Simon Ohm

was able to define the fundamental relationship between voltage, current, and resistance. What is now known as Ohm's law appeared in his most famous work, a book published in 1827 that gave his complete theory of electricity.

Ohm’s law

Mathematically, the relationship of voltage, current, and resistance are written as, Electric current is directly proportional to voltage and inversely proportional to resistance

Ohm’s law

as the rate of doing work, it is the work done in unit time. The SI unity power unit is Watt (W) which is joules per second (J/s). Sometimes the power of motor vehicles and other machines is given in terms of Horsepower (hp), which is approximately equal to 745.7 watts.

Power

Power is defined as the rate at which work is done upon an object. Power is a time-based quantity. Which is related to how fast a job is done. The formula for power is mentioned below.

Power=Work/Time P=W/t

V= (c/s) (j/s divided by c^2) Equation: V= IR

Calculating electrical power using ohm’s law

Defined as the "ability to do work, which is the ability to exert a force causing displacement of an object." Energy is just the force that causes things to move. Energy is divided into two types: potential and kinetic.

Energy

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問題一覧

in joules is a total stored energy of an entire object

Potential energy

also called voltage a stored energy per charge

Electric potential

Alternative names for electric potential

Voltage, Potential difference

It is the energy that is needed to move an electric charge against an electric field.

Electric Potential Energy

It is the amount of work needed to move an electric charge from its reference point to specific point on electric Field

Electric Potential

difference in electric potential between two points in a field

Potential difference

U=k q/r - is the property of points in space.

Electric potential energy

Voltage

VB-VA

the ____ does the _____ to produce the ____

Field, Work, Acceleration

is the rate of flow of electrons in a conductor. The SI Unit of electric current is the Ampere or Amps. The S.I symbol is in capital A.

Electric current

is from negative to positive terminal. Electrons are negatively charged and are therefore attracted to the positive terminal as unlike charges attract.

Electron flow

2 types of electric curren

Alternating current (AC), Direct current (DC)

measured in ampere. One ampere of current represents one coulomb of electric charge moving past a specific point in one second.

Electric current

-So we can say that near the plate the electrical potential is high and far from the plate, the electrical potential is low.

A positively charge plate

So we can say that near the negative plate, the electrical potential is low, and further from the negative plate the electrical potential is high.

A negatively charge plate

He discover how electricity works

Alessandro volta

like pressure in a water pipe More voltage means more pressure. More pressure means more water can flow, More Voltage means more electrons can flow

Voltage

demonstrated the magnetic effect based on the direction of current.

Andre Marie Ampere

Resistance is a measure of the opposition to current flow in an electrical circuit. Current Resistance is measured in ohms, symbolized by the Greek letter omega (horse shoe symbol)

Georg Simon Ohm

Ohm’s law

Mathematically, the relationship of voltage, current, and resistance are written as, Electric current is directly proportional to voltage and inversely proportional to resistance

Ohm’s law

Power

Power is defined as the rate at which work is done upon an object. Power is a time-based quantity. Which is related to how fast a job is done. The formula for power is mentioned below.

Power=Work/Time P=W/t

V= (c/s) (j/s divided by c^2) Equation: V= IR

Calculating electrical power using ohm’s law

Energy