B9 Electricity and electric current

21 Feasible experiments.

• Electricity
• Triboelectricity
• Protons and electrons
• Electric actions
• Electrostatic induction
• Double electric pendulum
• Contact electrization
• The leaf electroscope
• Electrical state of a body
• Determination of the electrical state of a body
• Even the air can be electrified
• The biological effects of air ionization
• Lightning
• Electricity in motion
• Batteries
• Volta battery
• Electric potential difference
• Voltmeter
• Electrical circuit
• Conductors and insulators
• Intensity of the electric current
• Ammeter
• Electrical resistance
• Electric energy
• Lamps in series and lamps in parallel
• The domestic electrical system