EDU ACE

What is a charge carrier? A charged particle capable of transferring electric current. What do we mean when we say charge is quantised? It can only take certain values (always ne) If n electrons are removed from a neutral object what is its charge? ne What is an electrolyte? A liquid containing charged ions. What is a metallic conductor? A material comprising a lattice of positive ions and delocalised electrons that carry electrical current Which direction does conventional current flo...

Speed =distance / time Velocity Is a vector and therefore has both direction and magnitude. =displacement / time Accelaration =(v-u)/t Where v is initial velocity and u is final velocity Displacement time graph upward slope - constant positive velocity flat line - stationary downward slope - negative constant velocity It can often be easier to just draw a distance-time graph. velocity-time graph Acceleration-time graph a graph describing motion of an object, with acceleration on t...

Displacement The distance travelled in a particular direction - it is a vector with magnitude and direction. Instantaneous Speed The rate of change of distance at a specific moment in time - change in distance divided by an infinitesimal interval of time. Average Speed The rate of change of distance calculated over a complete journey Velocity A vector quantity equal to the rate of change of displacement. Average Velocity The change in displacement (Δs) for a journey divided by the time...

Speed =distance / time Velocity Is a vector and therefore has both direction and magnitude. =displacement / time Accelaration =(v-u)/t Where v is initial velocity and u is final velocity Displacement time graph upward slope - constant positive velocity flat line - stationary downward slope - negative constant velocity It can often be easier to just draw a distance-time graph. velocity-time graph Acceleration-time graph a graph describing motion of an object, with acceleration on t...

Study Difference between stationary and progressive waves A progressive wave transfers energy, all parts of its wave have the same amplitude Mean drift velocity The average displacement of electrons as they move along a wire per second On average, they travel more slowly in one direction through the metal lattice due to collisions with it Number density of conductors, insulators and semiconductors Conductors - 10^29 Semiconductors - 10^19 Insulators - 10^9 Potential difference Energ...

What is elementary charge equal to? 1.6 x10^-19 C What direction does convectional current travel? From + to - What direction is electron flow? From - to + State Kirchhoff's first law At any point in an electrical circuit, the sum of currents entering a point is equal to the sum of currents leaving the point What is mean drift velocity? The average velocity of electrons as they move through a wire Difference between conductors, semiconductors and insulators Conductors - High number...

Study Speed =distance / time Velocity Is a vector and therefore has both direction and magnitude. =displacement / time Accelaration =(v-u)/t Where v is initial velocity and u is final velocity Displacement time graph upward slope - constant positive velocity flat line - stationary downward slope - negative constant velocity It can often be easier to just draw a distance-time graph. velocity-time graph Acceleration-time graph a graph describing motion of an object, with accelerati...

The SAT (Scholastic Assessment Test) is a standardized test used for college admissions in the United States. It measures a student's readiness for college and is commonly taken by high school juniors and seniors. Structure of the SAT: Reading Section: Tests comprehension of passages from literature, history, social sciences, and science. Writing

Scholastic Aptitude Test Study ( n ) fatigue Extreme tiredness ( n ) absentmindedness A lack of attention to what u are doing or what is happening around because you are thinking about something else. ( n ) Resourcefulness The ability to make decisions and act on one's own ( v ) Forage ( of a person or animal) to search for food ( of a person ) to search for sth especially using hands ( n ) reverence A feeling of respect or admiration for somebody or sth ( v ) acquiesce To acc...

Scholastic Aptitude Test Words Study abase lower; humiliate abash embarrass abdicate renounce abettor encourager abeyance suspended action abhor detest; hate abjure renounce upon oath abominate loathe abortive unsuccessful; fruitless abrade erode; wear away by friction absolve pardon (an offense) abstemious