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### Table of Contents:

- How do you write powers in Java?
- What is the power function in Java?
- How do you find the power of 2 in Java?
- How is power function implemented in Java?
- What is -= in Java?
- What is the power of 600 joules of work done in 4 seconds?
- What is the formula of charge q?
- Which type of current is used in homes?
- Which current is more dangerous?
- What hurts more AC or DC?
- Why DC is not used in homes?
- Which is safer AC or DC?
- Can DC kill you?
- Is a TV AC or DC?
- What voltage does a TV use?
- Can a TV run on DC power?
- Can a UPS power a TV?
- Can a TV run on 12V?
- How long will a 12V battery run a TV?
- Will a 300 watt inverter run a TV?
- How many batteries do I need to run a 3000 watt inverter?
- How many solar panels does it take to run a TV?

## How do you write powers in Java?

**The java.**

**lang.**

**Math.**

**pow() is used to calculate a number raise to the**

**power**of some other number.- If the second parameter is positive or negative zero then the result will be 1.
## What is the power function in Java?

Power function in Java is used to calculate a number raised to the power of some other number. This function accepts two

**parameters**and returns the**value**of the first parameter raised to the second parameter.## How do you find the power of 2 in Java?

Another solution is to keep dividing the number by two, i.e, do n = n/

**2**iteratively. In any iteration, if n%**2**becomes non-zero and n is not 1 then n is not a**power of 2**. If n becomes 1 then it is a**power of 2**.## How is power function implemented in Java?

**Example 1**- public class PowExample1.
- {
- public static void main(String[] args)
- {
- double x = 5;
- double y = 4;
- //returns 5
**power**of 4 i.e. 5*5*5*5. - System.out.println(Math.
**pow**(x, y));

## What is -= in Java?

The

**-=**operator first subtracts the value of the expression (on the right-hand side of the operator) from the value of the variable or property (on the left-hand side of the operator). The operator then assigns the result of that operation to the variable or property.## What is the power of 600 joules of work done in 4 seconds?

240 Watts.

## What is the formula of charge q?

“One coulomb is the quantity of

**charge**transferred in one second.”...Overview of**Electric Charge**.Definition **Electric Charge**is the property of subatomic particles that causes it to experience a**force**when placed in an electromagnetic field.Symbol Q Formula Q = I.t SI Unit Coulomb Other Units Faraday, Ampere-Hour ## Which type of current is used in homes?

Alternating current

## Which current is more dangerous?

Alternating

**current**(A.C) is five times**more dangerous**than Direct**current**(D.C). The frequency of the alternating**current**is the main reason for this severe effect on the human body. The frequency of 60 cycles is in an extremely**harmful**range. At this frequency, even a small voltage of 25 volts can kill a person.## What hurts more AC or DC?

**A.C.**is said to be four to five times**more**dangerous than**D.C.**For one thing,**A.C.**causes**more**severe muscular contractions. ... The frequency of the**AC**has a lot to do with the effect on the human body. Unfortunately, 60 cycles is in the most harmful range. At this frequency, as little as 25 volts can kill.## Why DC is not used in homes?

Large transformers are

**used**to run transmission lines at high voltages in order to keep losses to a minimum. But high voltage is dangerous, particularly to life, so bringing it into a house would**not**be an acceptable risk. ...**DC**arcs do**not**"quench" as easily (because voltage does**not**go through zero).## Which is safer AC or DC?

An electric shock has the capacity to induce ventricular fibrillation which can lead to heart failure and death. Avoiding any form of electric shock is preferable, but

**DC**is considered**safer**in these circumstances as the human body's threshold to**DC**is considerably higher than to**AC**.## Can DC kill you?

The short answer is that it's not voltage that

**kills you**, it's current! 1800 volts of**DC**current through the body in the proper manner will certainly**kill you**. However, it's not the voltage but the current that does the damage. A current of less than 0.## Is a TV AC or DC?

Batteries and electronic devices like TVs, computers and DVD players use

**DC**electricity - once an**AC**current enters a device, it's converted to**DC**. A typical battery supplies around 1.## What voltage does a TV use?

120 volts

## Can a TV run on DC power?

modern

**TVs**using LCD or LED**can run on DC**as the actual**power**circuitry inside them**run**essentially on**DC**. So if you really want to**run**it by AC ( which is common and we plug in the LCD**power**adapter to our AC supply board ) there has to be some kinda inverter or Ac/**Dc**converter via rectifier bridging system .## Can a UPS power a TV?

A

**UPS**is very easy to use. ... The battery in the**UPS**will charge while the**electricity**is on. When the**electricity**goes off, your computer (or**TV**, DSTV, light, etc.) will be powered by the battery in the**UPS**.## Can a TV run on 12V?

Powering your home

**TV**from the**12-volt**lighter socket in your car, truck or RV is possible. Since the home**TV**uses AC (alternating current) power and the vehicle produces DC (direct current) power which is stored in the battery, a power inverter is required to produce the type of power used by your**television**.## How long will a 12V battery run a TV?

Likewise, people ask,

**how long will a 12v battery power a TV**? The simple, and flawed, answer is that a**12V**/20AH**battery will**supply 12*20 = 240 Watts of**power**for an hour. So if you use 35W, the**battery will**last 240/35 = 6.## Will a 300 watt inverter run a TV?

Site Team. Almost any of the inexpensive 250 to

**300 watt**Modified Sine Wave**inverters will**work. The secret is to mount the**inverter**within a few feet of the battery and**run**short, fat wires directly there so there's minimum voltage loss on the 12 volt side, then extend the 120 volt wires to the**TV**/VCR.## How many batteries do I need to run a 3000 watt inverter?

So you will

**need**two 12v**batteries**. Some models use 48V DC, in which case you will**need**four 12V**batteries**.**How many batteries**can be connected to an**inverter**? The standard answer**would**be (assuming two 12V**batteries**) to wire them up in parallel to double the capacity into the 12V**inverter**.## How many solar panels does it take to run a TV?

If you have a 150-watt 32 inches LED

**TV**, it will consume up to 22.

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