Key Concepts in Energy, Electricity, and Matter
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1. Energy Stores Kinetic, thermal, chemical, gravitational potential, elastic potential, nuclear, elec-
trostatic, magnetic.
2. Energy Transfers Mechanically, electrically, by heating, or radiation.
3. Conservation of Energy cannot be created or destroyed, only transferred.
Energy
4. Efficiency Efficiency = (Useful output energy / Total input energy) × 100
5. Kinetic energy Ek = 1/2 mv^2
equation
6. Gravitational po- Ep = mgh
tential energy
equation
7. Energy transferred E = Pt
equation (power)
8. Energy transferred E = QV
equation (charge)
9. Work done equa- W = Fd
tion
10. Unit of energy Joules (J)
11. Current (I) Flow of electric charge (measured in Amps)
12. Voltage (V) Energy per charge (Volts)
13. Resistance (R) Opposition to current (Ohms)
14. Series Circuits Current same, voltage splits
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Study online at https://quizlet.com/_h2azcu
1. Energy Stores Kinetic, thermal, chemical, gravitational potential, elastic potential, nuclear, elec-
trostatic, magnetic.
2. Energy Transfers Mechanically, electrically, by heating, or radiation.
3. Conservation of Energy cannot be created or destroyed, only transferred.
Energy
4. Efficiency Efficiency = (Useful output energy / Total input energy) × 100
5. Kinetic energy Ek = 1/2 mv^2
equation
6. Gravitational po- Ep = mgh
tential energy
equation
7. Energy transferred E = Pt
equation (power)
8. Energy transferred E = QV
equation (charge)
9. Work done equa- W = Fd
tion
10. Unit of energy Joules (J)
11. Current (I) Flow of electric charge (measured in Amps)
12. Voltage (V) Energy per charge (Volts)
13. Resistance (R) Opposition to current (Ohms)
14. Series Circuits Current same, voltage splits
1/3
