Electrical Power & Energy Chapter 7-3. Electrical Power F Power is the rate at which work is done F Electrical energy is easily converted into other forms.

Slides:

Advertisements

Similar presentations

Electricity & Safety in the Home

Advertisements

Electrical Power The rate at which electrical energy is converted to another form of energy. Thermal, Light, Motion…

ELECTRICAL SYSTEMS 21.3.

Series Circuits One kind of circuit is called a series circuit. In a series circuit, the current has only one loop to flow through. 7.3 Electrical Energy.

12. 2 Using Electrical Energy Wisely. (Pages )

 Rate at which energy is consumed or produced  Changed into other forms of energy  Measured in WATTS (W)

Power Calculations Noadswood Science, 2011.

 POWER: the rate of change in energy; also the rate at which work is done or energy is transformed  JOULE (J): the unit for measuring energy  WATT.

Ch Electricity IV. Measuring Electricity (p )  Electrical Power  Electrical Energy.

True or False? The voltage in a parallel circuit is the same across each parallel branch. In a parallel circuit the combined resistance is greater than.

Electric Power, AC, and DC Electricity

Circuits & Electronics

Chapter 8 – Electricity and Magnetism

Power. Your Utilization of Electricity Have you ever heard the word Watt before? Have you ever used the word Kilowatt before? When? When a person is speaking.

Electrical Energy.  Electrical energy is the energy transferred to an electrical device by moving electrical charges. The energy used at home is measured.

34.11 Electric Power Electric power is equal to the product of current and voltage.

Ohm’s Law & Electrical Power. Resistance - the tendency for a material to oppose the flow of electronsResistance - the tendency for a material to oppose.

Electrical Power Chapter 19 Section 3. Energy to Power Electrical Power is the rate of conversion of electrical energy. Electrical Power is the rate of.

ELECTRICITY: CHAPTER 7 Section 3 B. Protecting the Building  Two ways to control current in wiring  Fuse Contains a small wire that melts if too much.

Physics Day 23 Aim: How much power does a toaster use? LO: Calculate power use for V, I and R LO: Calculate energy use from power LO: Kilowatt-hour is.

Current Electricity Current, Power and Energy. Current Electricity Current Electricity is what you get when you plug something into the wall. There are.

Paying for Electricity How much does it cost to watch T.V. for 2 hours?

Units Of Electricity Ashfield Direct Learning Holly Millar Ks4 Energy.

Bellringer Two AA batteries in series will provide a voltage of how many volts?

Jag Mark In terms of electrons, how can an uncharged object become charged?

5.5 Power It takes time to change one form of energy into another. Physicists use the word power (P) to describe the rate at which energy is transformed,

Electrical Power and Energy. Electrical Power We briefly discussed power (P = W/T), where P = power, W = Work, and T = Time – Power was defined as the.

Calculate the missing quantities for the circuit below.

Power and Energy. Power Electric power - the rate at which electric energy is transformed into another form of energy such as light or heat. P=IV P =

Chapter 6 Power. Chapter 6.1 Power in Mechanical Systems.

Physical Science Mr. Barry. Series circuits have one loop through which current can flow.

Electrical Calculations. Ohm’s law describes the relationship between current, resistance, and voltage. As voltage increase, current increases As resistance.

Do Now (10/10/13): What do Watts measure?

Electricity Notes 5 Electric Power – the rate at which _______________________ the rate at which _____________________ is converted into another form of.

WORK, ENERGY & POWER. Work  A measure of the amount of energy transformed from one form to another  For example, work is done when energy is used to.

Power. Your Utilization of Electricity Have you ever heard the word Watt before? Have you ever used the word Kilowatt before? When? When a person is speaking.

Calculating Energy Use and Converting Units Chapter 2.

Electric Power Lesson 2.5. Key Concepts How do you calculate electric power? What factors are used to determine how people pay for electrical energy?

Energy Consumption Energy consumption is measured in kilowatt. hours. A kilowatt hour is the amount of energy being consumed per hour. –Energy (kwh) =

ELECTRICITY: Electrical Energy (Circuits)

Electrical power. What is electrical power? Electrical power is the rate at which an electrical appliance uses electrical energy. All appliances have.

Energy & Power for APES Adapted from Maureen Goble.

ELECTRIC POWER. POWER AT HOME When you plug in a device, you are using alternating current (AC) Both (+) and (-) … alternates at 60x /second (60Hertz)

Buying electricity. Calculating the units of electricity The amount of electrical energy (i.e. the amount of electricity) used by an appliance depends.

Power in Electrical Systems Power in Electrical Systems.

Chapter 34 Notes Electric Circuits. Electric Current Intro Voltage is an “electric pressure” That can produce a flow of charge, or current, within a conductor.

Circuits. Reviewing terms Circuits need 3 basic parts: An Energy Source Load (Power demand) Wires.

Electrical Circuits Section 7.3. Electrical Circuits Circuits rely on generators at power plants to produce a voltage difference across the outlet, causing.

Electrical Systems Series Circuits Parallel Circuits Electrical Power.

7. Power in electric circuits

Chapter 13: Electricity Section 13.1: Electric Charge

Energy Consumption: CO$T.

The Cost of Electricity

Electric Power Energy Cost

By: Michelle, Yeovani, Jalen

Electrical Calculations

Section 3.3 Measuring Energy Input and Output 1

9.2 The Power of Electricity

IV. Measuring Electricity

Section 3.3 Measuring Energy Input and Output 1

Energy Consumption: CO$T.

Section 3.3 Measuring Energy Input and Output 1

Goals To calculate resistance using Ohm’s Law

Chapter Twenty One: Electrical Systems

The Cost of Electrical Energy

Energy and Power.

Electric Power.

Notes 7.3 : Calculating Electric Power + Electrical Energy

Presentation transcript:

Electrical Power & Energy Chapter 7-3

Electrical Power F Power is the rate at which work is done F Electrical energy is easily converted into other forms of energy –Mechanical-Fans blades –Thermal-Hair dryer

F Electrical Power is the rate at which electrical energy is converted into other forms of energy

F Power = current X voltage F Units of Watts (W) or kilowatts (kW)

Electrical Energy F The amount of electrical energy used depends on the power required by the appliance and the length of time the appliance is used.

F Energy = power X time F E = Pt F Units of kilowatt-hour (kWh)

Cost of Using Electrical Energy F Multiplying the electrical energy used by the amount of the power company charges for each kWh. F Total cost=Power*time*cost F $=kW*hr*cost