Exam (elaborations)
NCEA Level 2 Physics Electricity Detailed Questions and Expert Answers
- Course
- Electricity
- Institution
- Houston Community College
NCEA Level 2 Physics Electricity Detailed Questions and Expert Answers
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NCEA Level 2 Physics Electricity Detailed Questionsand Expert Answers
Attraction of Electric Charges - ANS Unlike charges give negative potential energy
(attractive force). Unlike charges attract one another.
Charging by conduction - ANS Charging an object by allowing it to come into
contact with an abject that already has an electrical charge.
Charging by friction - ANS Two objects rub together and one becomes positively
charged and the other becomes negatively charged.
Charging by induction - ANS Charging an object without direct contact (proximity
to nearby object charges neutral objects)
Conductors - ANS Materials that allow electric chargers to flow through them
easily
Coulomb - ANS Unit used to measure quantity of electric charge.
Current - ANS A flow of electricity through a conductor, flow of electric charge.
Current electricity - ANS The continuous flow of electrons through a conductor
, Direct current - ANS An electrical current that always moves in one direction
Electric Circuit - ANS Consists of a voltage source and a continuous conducting
path for a current to follow
Electric Current - ANS The flow of electric charge electric field force field produced
by an electrical charge
Electric Field - ANS The field around charged particles that exterts a force on other
charged particles.
Electric field lines - ANS A map of an electric field representing the direction of the
force that a positive charge would experience
Electric Generator - ANS A mechanical device that uses wire loops rotating in a
magnetic field to generate electricity
Electric potential - ANS The difference in electrical charge between 2 points in a
circuit expressed in volts (potential difference)
Electric Potential ENergy - ANS Potential energy due to the position of a charge
near other charges.
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