# What is power Class 9 formula?

The formula is P = E/t, where P means power, E means energy, and t means time in seconds. This formula states that power is the consumption of energy per unit of time.

## What is meant by power in physics?

power, in science and engineering, time rate of doing work or delivering energy, expressible as the amount of work done W, or energy transferred, divided by the time interval t—or W/t. A given amount of work can be done by a low-powered motor in a long time or by a high-powered motor in a short time.

## What is power in terms of energy Class 9?

The rate at which work is completed can be characterized as power. The amount of energy utilized per unit of time is referred to as power. It is a scalar quantity because it has no direction.

## What is power explain?

1 : possession of control, authority, or influence over others. 2 : a nation that has influence among other nations a foreign power. 3 : the ability to act or produce an effect It’s in your power to change things. 4 : the right to do something the president’s powers.

## What is a power unit?

Definition of power unit : an engine usually of the internal-combustion type mounted with accessories for use in portable operation of mechanical equipment — compare power pack sense 2.

## What is electric power SI unit?

(ii) The SI unit of electric power is watt (W).

## What is power and 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.

## What is power and write its formula?

Power is defined as the rate of doing work. It is the ratio of the work done(W)and the time taken(t). Power(P)=Time(t)Work(W)

## What is power and its types?

Personal power is the ability to control the environment around you. This can be accomplished through the five different types of power: reward power, coercive power, legitimate power, expert power, and referent power.

## What is difference between power and energy?

Energy is the capacity to do some physical activities or work, such as running, jumping, etc., while power is defined as the rate at which the energy is transferred, or the work is completed. The unit used to measure energy is joules, ergs and calories. Power is measured in watts.

## What is work and power?

Work is defined as the process of energy transfer to the motion of an object through the application of force. This is usually represented as the product of force and displacement. The SI unit of work is Joule. Power is defined as the amount of energy transferred in unit time. The SI unit of power is the watt.

## What is difference between work energy and power?

Work, Energy and Power are fundamental concepts of Physics. Work is said to be done when a force (push or pull) applied to an object causes a displacement of the object. We define the capacity to do the work as energy. Power is the work done per unit of time.

## What are the 3 types of power?

• Power refers to the ability to have one’s will carried out despite the resistance of others.
• According to Max Weber, the three types of legitimate authority are traditional, rational-legal, and charismatic.

## What are the 4 types of power?

• Expert: power derived from knowledge or skill.
• Referent: power derived from a sense of identification others feel toward you.
• Reward: power derived from an ability to reward others.
• Coercive: power derived from fear of punishment by others.

## Is SI unit of power is joule?

The SI unit of work is Joule and that of time is second. So, the SI unit of power is Joule per second which is commonly referred to as Watt.

## How is power measured?

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).

## What is power output?

Power Output means the average rate of electric energy delivery during one Metering Interval, converted to an hourly rate of electric energy delivery, in kWh per hour, that is equal to the product of Metered Energy for one Metering Interval, in kWh per Metering Interval, times the number of Metering Intervals in a one- …

## How is power calculated?

Power is equal to work divided by time. In this example, P = 9000 J / 60 s = 150 W . You can also use our power calculator to find work – simply insert the values of power and time.

## What is power in a circuit?

Electrical Power, ( P ) in a circuit is the rate at which energy is absorbed or produced within a circuit. A source of energy such as a voltage will produce or deliver power while the connected load absorbs it.

## What is this power factor?

Power factor (PF) is the ratio of working power, measured in kilowatts (kW), to apparent power, measured in kilovolt amperes (kVA). Apparent power, also known as demand, is the measure of the amount of power used to run machinery and equipment during a certain period. It is found by multiplying (kVA = V x A).

• Legitimate.
• Reward.
• Expert.
• Referent.
• Coercive.

## What are the sources of power?

• Legitimate power.
• Expert power.
• Referent power.
• Coercive power.
• Reward power.

## What’s the nature of power?

A century ago, the German sociologist Max Weber described power as “the probability that one actor in a social relationship will carry out his own will against the resistance of others.” This suggests power is more than achieving influence, and requires the ability to secure goals in the face of opposition.

• P = E t.
• P = W t.
• P = V 2 R.

## What are the 7 types of power?

• Power in leadership helps teams reach greater levels of performance.
• Legitimate Power.
• Coercive Power.
• Expert Power.
• Informational Power.
• Power of Reward.
• Connection Power.
• Referent Power.