Public learning track
Electrical Power, Energy Transfers, and Efficiency
10th Grade · Science · UK GCSE
8 lessons
Goal
Calculate electrical power and energy dissipation in domestic appliances and examine energy transfers to motors and heaters.
Featured Diagrams
Electrical Power: The Rate of Energy Transfer in Circuits
8 lessons
0 of 8 done
- 1Electrical Power: The Rate of Energy Transfer in CircuitsUp nextStart
- 2Calculating Power Using P = I × VPremiumNot started yet
- 3Heating Effect of Electric CurrentNot started yet
- 4Calculating Power Dissipation Using P = I² × RNot started yet
- 5Calculating Energy Transferred Using E = P × tNot started yet
- 6Energy Transfers in Heating Devices and Electric MotorsNot started yet
- 7Calculating Efficiency and Reducing Unwanted Energy TransfersNot started yet
- 8Selecting Correct Fuse Ratings from Power LabelsNot started yet
Standards Covered
- UK-GCSE-SCIENCE-PHYS-ELE-04General Certificate of Secondary Education (GCSE) · Science · Year 11 (GCSE) · Grade 10Energy transfers
- UK-GCSE-SCIENCE-PHYS-ELE-04-01General Certificate of Secondary Education (GCSE) · Science · Year 11 (GCSE) · Grade 10explain how the power transfer in any circuit device is related to the p.d. across it and the current, and to the energy changes over a given time
- UK-GCSE-SCIENCE-PHYS-ELE-05-01General Certificate of Secondary Education (GCSE) · Science · Year 11 (GCSE) · Grade 10apply the equations relating p.d., current, quantity of charge, resistance, power, energy, and time, and solve problems for circuits which include resistors in series, using the concept of equivalent resistance (1c, 3b, 3c, 3d)
- UK-GCSE-SCIENCE-PHYS-ELE-04-02General Certificate of Secondary Education (GCSE) · Science · Year 11 (GCSE) · Grade 10describe how, in different domestic devices, energy is transferred from batteries and the a.c. mains to the energy of motors or of heating devices
- UK-GCSE-SCIENCE-PHYS-ELE-03-02General Certificate of Secondary Education (GCSE) · Science · Year 11 (GCSE) · Grade 10recall the differences in function between the live, neutral and earth mains wires, and the potential differences between these wires; hence explain that a live wire may be dangerous even when a switch in a mains circuit is open, and explain the dangers of providing any connection between the live wire and earth
Curriculum Framework
10th Grade · Science · UK GCSE
1
10 lessons
Electric Charge, Current, and Potential Difference
Master the fundamental concepts of electric charge, current flow, and potential difference in simple direct-current circuits.
2
8 lessons
Resistance and I-V Characteristics
Investigate electrical resistance, apply Ohm's law, and analyse the current-voltage graphs of linear and non-linear components.
3
8 lessons
Series and Parallel Circuit Analysis
Analyse current, potential difference, and total resistance in series and parallel circuits using rules and quantitative calculations.
4
7 lessons
Sensing Circuits and Control Components
Understand how thermistors and LDRs function and how they are integrated into potential divider sensing circuits.
5
8 lessons
Domestic Electricity and Mains Safety
Master the principles of UK mains supply, alternating current, three-pin plug wiring, and electrical safety mechanisms.
6
8 lessons
Electrical Power, Energy Transfers, and Efficiency
Calculate electrical power and energy dissipation in domestic appliances and examine energy transfers to motors and heaters.
7
6 lessons
The National Grid and Power Transmission
Explain the architecture of the National Grid and why high-voltage power transmission enhances efficiency.
8
7 lessons
Permanent and Induced Magnetism
Explore magnetic poles, field patterns, magnetic materials, and Earth's magnetic core.
9
10 lessons
Electromagnetism and the Motor Effect
Examine how electric currents produce magnetic fields, build solenoids, and apply the motor effect.
10
6 lessons
Quantitative Circuit Equations and Calculations Mastery
Master multi-equation problem solving combining charge, current, voltage, resistance, power, energy, and time.
11
5 lessons
Required Practicals and Circuit Instrumentation Skills
Master experimental apparatus, data recording, zero error handling, and required practical methods for GCSE electricity.
12
5 lessons
Graphical Analysis of Linear and Non-Linear Circuit Elements
Interpret, compare, and calculate properties from current-voltage graphs and sensor calibration curves.
13
5 lessons
The Motor Effect and Magnetic Force Calculations
Calculate the magnetic force on a conductor and determine the direction of force using Fleming's left-hand rule.
14
5 lessons
Electric Motors and Applications of the Motor Effect
Explain how the motor effect produces continuous rotation in DC electric motors and drives sound devices.