Table of Contents
What is Watt formula?
The formula for calculating wattage is: W (joules per second) = V (joules per coulomb) x A (coulombs per second) where W is watts, V is volts, and A is amperes of current. In practical terms, wattage is the power produced or used per second. For example, a 60-watt light bulb uses 60 joules per second.
How do you calculate the power of a force?
Often it is convenient to calculate the average power. In the straightforward cases where a constant force moves an object at constant velocity, the power is just P = Fv.
What is another formula for power?
Power can be expressed as P = Work/Change in Time, instead of P = Change in Energy/Change in Time, because the change in energy is basically the work done.
What is equal to 1 watt?
Watts are defined as 1 Watt = 1 Joule per second (1W = 1 J/s) which means that 1 kW = 1000 J/s. A Watt is the amount of energy (in Joules) that an electrical device (such as a light) is burning per second that it’s running. So a 60W bulb is burning 60 Joules of energy every second you have it turned on.
What is 4 as a power of 2?
16
Answer: 4 to the power of 2 can be expressed as 42 = 4 × 4 = 16.
What is work done formula?
Mathematically, the concept of work done W equals the force f times the distance (d), that is W = f. d and if the force is exerted at an angle θ to the displacement, then work done is calculated as W = f . d cos θ.
What is the three formula of power?
| Electric Power P | watts |
|---|---|
| Amperage I | amps |
| Voltage V | volts |
| P = I × V I = P / V V = P / I |
What is power example?
Power is defined as the ability to act or have influence over others. An example of power is the strength needed to run five miles. An example of power is the authority a local government has to collect taxes. The definition of power is operating electrically or having strength or force.
What does Q mean in physics?
Charge
Charge comes in multiples of an indivisible unit of charge, represented by the letter e. In other words, charge comes in multiples of the charge on the electron or the proton. q is the symbol used to represent charge, while n is a positive or negative integer, and e is the electronic charge, 1.60 x 10-19 Coulombs.
How to calculate power based on work and time?
Power in physics is the amount of work done divided by the time it takes, or the rate of work.
How do you write the equation for power?
Because work equals force times distance, you can write the equation for power the following way, assuming that the force acts along the direction of travel: where s is the distance traveled. However, the object’s speed, v, is just s divided by t, so the equation breaks down to That’s an interesting result — power equals force times speed?
How do you calculate the amount of force?
The amount of force is the mass of the object multiplied by the acceleration of the object when the force is exerted while moving.
How is the rate of work calculated in physics?
Power is the rate at which work is done. It is the work/time ratio. Mathematically, it is computed using the following equation. Power = Work / time