1
Q
what is the equation for efficiency?
A
efficiency = useful energy output / total energy output x 100
2
Q
where is wasted energy normally transferred?
A
to less useful stores like heating, light, or sound
IGCSE Physics
flashcards
Decks in class (66)
# Cards
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Topic 1 - Velocity and Acceleration9
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Topic 1 - Distance-Time and Velocity-Time Graphs14
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Topic 1 - Mass, Weight, Gravity9
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Topic 1 - Forces and Friction9
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Topic 1 - 3 Laws of Motion5
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Topic 1 - Combining Forces4
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Topic 1 - Terminal Velocity2
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Topic 1 - Hooke's Law4
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Topic 1 - Stopping Distance6
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Topic 1 - Momentum and Collisions (Paper 2)5
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Topic 1 - Turning Effects and Centre of Gravity (Paper 2)4
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Topic 1 - Principle of Moments (Paper 2)3
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Topic 2 - Circuits20
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Topic 2 - Resistance7
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Topic 2 - LDRs, Thermistors and LEDs6
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Topic 2 - Series and Parallel Circuits13
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Topic 2 - Charge, Voltage and Energy Change9
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Topic 2 - Electrical Safety9
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Topic 2 - Energy and Power in Circuits12
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Topic 2 - Static Electricity (Paper 2)6
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Topic 3 - Basics of Waves15
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Topic 3 - Wave Behaviour and EM Waves9
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Topic 3 - Uses of EM Waves20
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Topic 3 - Dangers of EM Waves11
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Topic 3 - Reflection and Refraction11
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Topic 3 - Refractive Index9
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Topic 3 - Sound Waves5
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Topic 3 - Sound Waves (Paper 2)9
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Topic 4 - Conservation of Energy18
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Topic 4 - Efficiency2
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Topic 4 - Energy Transfer5
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Topic 4 - Sankey Diagrams2
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Topic 4 - Transfer By Heating17
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Topic 4 - Convection3
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Topic 4 - Non-Renewable Energy (Paper 2)8
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Topic 4 - Work and Power7
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Topic 4 - Kinetic and Potential Energy6
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Topic 4 - Renewable Energy (Paper 2)14
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Topic 5 - Density and Pressure13
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Topic 5 - Changes of State (Paper 2)12
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Topic 5 - Temperature and Particle Theory5
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Topic 5 - Temperature and Particle Theory (Paper 2)1
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Topic 5 - Particle Theory and Pressure in Gases4
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Topic 5 - Specific Heat Capacity (Paper 2)4
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Topic 6 - Magnets and Magnetic Fields12
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Topic 6 - Electromagnetism9
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Topic 6 - Electromagnetism (Paper 2)3
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Topic 6 - The Motor Effect7
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Topic 6 - Electric Motors and Loudspeakers5
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Topic 6 - Electromagnetic Induction10
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Topic 6 - Transformers (Paper 2)9
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Topic 7 - Radioactivity16
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Topic 7 - Ionising Radiation19
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Topic 7 - Investigating Radiation5
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Topic 7 - Nuclear Equations4
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Topic 7 - Half-life4
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Topic 7 - Uses of Nuclear Radiation12
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Topic 7 - Risks of Nuclear Radiation15
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Topic 7 - Nuclear Fission and Fusion11
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Topic 8 - The Universe13
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Topic 8 - Gravity and Orbits11
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Topic 8 - Classifying Stars5
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Topic 8 - Classifying Stars (Paper 2)5
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Topic 8 - Red-Shift (Paper 2)2
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Topic 8 - Stellar Evolution20
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Topic 8 - The Big Bang (Paper 2)3
