Question: What Is The Formula Of Power?

What is work formula?

We can calculate work by multiplying the force by the movement of the object.

W = F × d.


The SI unit of work is the joule (J).

What is an electric charge Class 10?

The deficit or surplus of electrons in a body is called an electric charge.

How do you calculate watts?

To obtain Watts you need both Amps and Volts: The formula is (A)*(V) = (W). For example, if you have a current of 2 A and a voltage of 5 V, the power is 2A * 5V = 10W.

What is Ohm’s law class 10?

Class 10 Physics Electricity. OHMs Law. OHM’s Law. OHM’s law states that under no same temperature, electric current flowing through an ideal conductor is directly proportional to the potential difference across its ends. V ∝ I.

What is the formula for power in watts?

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.

What is the formula of electric?

Electricity FormulasQuantityFormulasUnitVoltage VV = E / Q or V = W / Q E = Energy, W = Work doneVolts (V)Resistance RR = ρl / A ρ = Resistivity, l = length, A = Area or, R = V / IOhm (Ω)Power PP = VIWatts (W)Conductivity σsigma = 1 / ρSiemens per meter (S/m)1 more row

What are the 3 versions of work formula?

When a force acts upon an object to cause a displacement of the object, it is said that work was done upon the object. There are three key ingredients to work – force, displacement, and cause.

What is work and its types?

Work is defined as the force acting on a body which is responsible for the displacement of the body. Work is measured as a constant force and is the dot product of force and displacement. S is the displacement. … q is the angle between F and S.

What is the formula of power Class 10?

The electric power is given by P = VI. Where V is the potential difference, I is the electric current and P is the electric power.

What is SI unit of power?

Power (P) is the rate at which energy is transferred or converted. Thus, power equals work divided by time (P = W / t). The SI unit of power is the watt (W), in honor of Scottish inventor James Watt (1736 – 1819). … One watt equals one joule per second (W = J / s).

How do I calculate KVA?

Use the formula: P(KVA) = (V^2/R)/1000 where R is resistance in ohms. For example, if V is 120 volts and R is 50 ohms, P(KVA) = V^2/R/1000 = (14400/50)/1000 = 288/1000 = 0.288 KVA.

What is Joule formula?

In equation form: work (joules) = force (newtons) x distance (meters), … One joule is defined as the amount of work done when a force of one newton is exerted through a distance of one meter.

How current is measured?

The electric current in one part of a circuit is measured with an ammeter, which gives a reading in ampere. To take the measurement, a gap is made in the circuit and the ammeter is connected into that gap, so that the charged particles moving around the circuit must pass through the meter.

What is the SI unit of time?

The second, symbol s, is the SI unit of time. It is defined by taking the fixed numerical value of the caesium frequency Cs. , the unperturbed ground-state hyperfine transition frequency of the caesium-133 atom, to be 9 192 631 770 when expressed in the unit Hz, which is equal to s–1.

What is the formula to calculate power?

Power is a measure of the amount of work that can be done in a given amount of time. Power equals work (J) divided by time (s). The SI unit for power is the watt (W), which equals 1 joule of work per second (J/s). Power may be measured in a unit called the horsepower.

What is power equal to in physics?

In physics, power is the amount of energy transferred or converted per unit time. In the International System of Units, the unit of power is the watt, equal to one joule per second. … The output power of a motor is the product of the torque that the motor generates and the angular velocity of its output shaft.