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What does the unit decibel measure?
The ratio between two quantities, usually quantities that somehow measure power, or intensity (power / area).
What are ratios of equal quantities?
The ratio of two equal quantities is 1 .
An equation states that two quantities are what?
An equation states that the two quantities on each side of the equal sign are equal.
What is the name for multiply or divide two quantities by the same number?
If the quantities are related linearly, then the operation would mean SCALING Otherwise it is just operations on the two quantities by a constant
What is derived quantity?
Derived quantities are quantities which are made or found from other major quantities. There are two types of quantities. Ones are which are recognized throughout the world and using them other quantities are made.
What is a comparison between two quantities that do not involve time?
A ratio is a comparison of two quantities
What does the unit decibel measure?
The ratio between two quantities, usually quantities that somehow measure power, or intensity (power / area).
What is formula for calculating watts into volts?
Watts are used to measure power, whereas volts are used to measure potential difference. These are two different quantities, and you cannot convert one into another any more than you can convert kilometres to kilograms.
What is the difference between saying that one quantity is proportional to another and saying it is equal to another?
When two quantities are proportional, it means that they change in a consistent ratio. If one quantity is equal to another, it means that they have the same value. Proportional relationships involve a constant factor, while equal relationships involve identical values.
What is the quotient of two quantities called?
The quotient of two quantities called a ratio.
What makes two quantities proportional?
Any two non-zero quantities are always proportional. If the two quantities are X and Y, they are proportional to X/Y.
A comparison of two quantities?
What is called a statement of comparing of two or more different quantities
Uses division to compare two quantities?
A ratio uses division to compare two quantities.
Why does not wattmeter measure the reactive power?
A wattmeter is designed so that it measures the supply voltage and the in-phase component of the load current. The product of these two quantities is the true power of the load.
What is the ratio of two quantities that change?
It is a non-linear or non-existent relationship between the two quantities.
What are ratios of equal quantities?
The ratio of two equal quantities is 1 .
How do you determine the amperage given the voltage and power dissipated?
Like Ohm's Law, the formula for calculating power is a simple product of two quantities. It is given by the formula P = VI, where V is the voltage in volts and I is the current in amperes (or simply amps). So, if you know the value of any two of the quantities, you can easily calculate the third with simple arithmetic. For example, if the current flowing through a resistor is two amps and the voltage drop across that resistor is five volts, the power dissipated by the resistor is, P = VI = 5 volts * 2 amps = 10 watts. If you are given the power and the voltage, you can easily find the current. For example, if you are told that the voltage drop across a resistor is five volts and is dissipating 10 watts, the current through the resistor is 10 watts/5 volts = 2 amps.
