Fundamentals of Direct Current and
Electrical Theory Exam 2025 Questions
and Answers
Direct Current (DC) - ....ANSWER ...-Flows continuously in one direction.
Electromotive Force (EMF) - ....ANSWER ...-Force causing flow of electrons,
measured in volts.
Electricity - ....ANSWER ...-Flow of electrons through a conductor.
Coulomb - ....ANSWER ...-Unit measuring electric charge; 1 Coulomb = 6.28
billion electrons.
Valence Shell - ....ANSWER ...-Outer electron orbit of an atom.
Friction - ....ANSWER ...-Static electricity produced by physical contact.
Pressure - ....ANSWER ...-Voltage generated by piezoelectric crystals under stress.
Heat - ....ANSWER ...-Voltage generated by thermocouples from temperature
differences.
Light - ....ANSWER ...-Voltage generated by solar cells absorbing photons.
Chemical - ....ANSWER ...-Voltage produced by batteries converting chemical
energy.
…FOR STUDENTS ONLY…©️2025 ALL RIGHTS RESERVED… 1
Electrical Theory Exam 2025 Questions
and Answers
Direct Current (DC) - ....ANSWER ...-Flows continuously in one direction.
Electromotive Force (EMF) - ....ANSWER ...-Force causing flow of electrons,
measured in volts.
Electricity - ....ANSWER ...-Flow of electrons through a conductor.
Coulomb - ....ANSWER ...-Unit measuring electric charge; 1 Coulomb = 6.28
billion electrons.
Valence Shell - ....ANSWER ...-Outer electron orbit of an atom.
Friction - ....ANSWER ...-Static electricity produced by physical contact.
Pressure - ....ANSWER ...-Voltage generated by piezoelectric crystals under stress.
Heat - ....ANSWER ...-Voltage generated by thermocouples from temperature
differences.
Light - ....ANSWER ...-Voltage generated by solar cells absorbing photons.
Chemical - ....ANSWER ...-Voltage produced by batteries converting chemical
energy.
…FOR STUDENTS ONLY…©️2025 ALL RIGHTS RESERVED… 1