EE3 Electrical Principles L3 MS

What is electricity considered as?

• A form of matter

• A form of energy

• A form of light

• A form of sound

What do electrical appliances convert electricity into?

• Other forms of matter

• Other forms of sound

• Other forms of energy

• Other forms of light

What is the movement of negatively charged electrons called?

• Magnetism

• Electricity

• Radiation

• Conduction

What provides the electromotive force (EMF) to drive electrons around a circuit?

• A resistor

• A capacitor

• A battery or power supply

• A diode

What is the formula for calculating energy (E) in terms of charge (Q) and EMF?

• E = Q + EMF

• E = Q × EMF

• E = Q / EMF

• E = EMF / Q

What is the unit of EMF?

• Joules (J)

• Coulombs (C)

• Volts (V)

• Amperes (A)

What is the charge of one electron?

• 1.6 × 10^-19 C

• 1.6 × 10^-18 C

• 1.6 × 10^-20 C

• 1.6 × 10^-17 C

What is the relationship between volts, joules, and coulombs?

• 1 volt = 1 joule per coulomb

• 1 volt = 1 coulomb per joule

• 1 joule = 1 volt per coulomb

• 1 coulomb = 1 volt per joule

Which of the following materials is a good conductor?

• Plastic

• Wood

• Metal

• Glass

What characteristic makes a material a good conductor?

• Tightly-held electrons

• Loosely-held electrons

• No electrons

• Heavy atoms