# How do you calculate joules?

Contents

## How do you calculate joules?

Multiply watts by seconds to get joules. A 1 Watt device consumes 1 Joule of energy every 1 second. If you multiply the number of watts by the number of seconds, you’ll end up with joules. To find out how much energy a 60W light bulb consumes in 120 seconds, simply multiply (60 watts) x (120 seconds) = 7200 Joules.

## How many volts is 120 joules?

Joules To Volts Conversion

Energy in Joules (J) Charge in coulombs (C ) Voltage in volts (V)
120 joules to volts 4 coulombs 30 volts
160 joules to volts 5 coulombs 32 volts
200 joules to volts 6 coulombs 33.33 volts
250 joules to volts 7 coulombs 35.71 volts

## How do you find joules from speed and mass?

In classical mechanics, kinetic energy (KE) is equal to half of an object’s mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.

## How do we calculate energy?

As every engineer knows, energy calculation is straightforward. The unit of electrical energy is the kilowatt-hour (kWh), found by multiplying the power use (in kilowatts, kW) by the number of hours during which the power is consumed. Multiply that value by the cost per kWh, and you have the total energy cost.

## What is the equivalent of 1 joule?

One joule equals the work done (or energy expended) by a force of one newton (N) acting over a distance of one meter (m). One newton equals a force that produces an acceleration of one meter per second (s) per second on a one kilogram (kg) mass. Therefore, one joule equals one newton•meter.

## How many joules are in a watt?

Watts (W) and Kilowatts (kW): Watts are defined as 1 Watt = 1 Joule per second (1W = 1 J/s) which means that 1 kW = 1000 J/s.

## Can you convert joules to volts?

You can calculate volts from joules and coulombs, but you can’t convert joules to volts since volt and joule units represent different quantities.

## What is a joule in electricity?

The joule (pronounced DJOOL) is the standard unit of energy in electronics and general scientific applications. One joule is defined as the amount of energy exerted when a force of one newton is applied over a displacement of one meter.

## How many grams are in a joule?

The answer is one Joule is equal to 0.2388458966275 Gram Calories. Feel free to use our online unit conversion calculator to convert the unit from Joule to Gram Calorie.

## How do you convert kg to J?

The equivalence of mass and energy is derived from the famous Einstein’s equation E = mc² where E is energy, m is mass and c = 299 792 458 m/s is the speed of light. That is, 1 kilogram of mass is equal to 8.98·10¹⁶ joules of energy or (1 J)/c² = 1.112 650 056 × 10⁻¹⁷ kg.