DC - CH.1 & 2

The electric charge created by rubbing two surfaces together is

• current electricity

• dynamic electricity

• motive electricity

• static electricity

To get current to flow in a circuit we need to apply

• a resistance

• a voltage

• a capacitance

• cross our fingers

Which of the following are renewable types of electrical generation

• Coal fired boiler

• Wind turbine

• Water from a dam is gravity fed to a turbine which spins a generator to produce electricity

• Nuclear powered boiler

• Solar radiation falls on photovoltaic panels to produce electricity

Which part of the electricity grid is used to deliver power to residential buildings

• Transmission

• Generation

• Distribution

• Communication

If an electric current flows through a person what are the typical effects

• Luminosity, arcs and burns

• Ventricular fibrillation and muscle spasms

• Magnetic fields, pressure and radiation

• Electrolysis and corrosion

Current flowing through a conductor will result in a electromagnetic field around the conductor.

If the current increases the strength of the magnetic field will

• reduce

• remain the same

• increase

• fall toward zero

• marginally fall

Sustainable energy principal consist of two areas,

select both

• renewable energy

• increasing generation

• energy efficiency

• carbon capture

Voltage can be considered

• pathway for electrons

• the opposition to current flow

• the flow of electricity

• electrical pressure between two points

• to flow from negative to positive

A thermocouple produces a voltage when

• a chemical reaction occurs

• heat is applied

• pressure is applied

• a magnetic field is applied

A photovoltaic cell produces a voltage when exposed to

• vibration

• heat

• pressure

• light