# Shared Flashcard Set

## Details

EXAM STUDY TIME, electric circuits
again, it explains itself.
19
Physics
07/24/2009

Term
 Electric Circuit.
Definition
 The path along which electrons flow, each device is connected to the same two points.
Term
 Closed circuit.
Definition
 A path with no openings in it, electrons can flow.
Term
 Open Circuit
Definition
 A path with one or more openings in it, electrons can't flow.
Term
 What are the two types of Circuits?
Definition
 Series and Parallel.
Term
 Series Circuit.
Definition
 Energy only has one way to flow.
Term
 What does current do in a series Circuit?
Definition
 It stays the same.
Term
 Req in a series circuit=
Definition
 R1+r2+R3 etc.
Term
 What happens if one device fails in a series circuit?
Definition
 Current stops and all of the devices fail.
Term
 What does voltage do in a series circuit?
Definition
 Divides among the branches.
Term
 Parallel Circuit.
Definition
 Energy has more than one path to flow.
Term
 What happens to current in a parallel circuit?
Definition
 It divides among the braches.
Term
 What happens to voltage an a parallel circuit?
Definition
 It stays the same.
Term
 How are the number of branches in a circuit and the total resistance related?
Definition
 Inversly proportional.
Term
 What is the relationship between Req and Resistance of each branch?
Definition
 Req
Term
Definition
 When a circuit is carrying more than a safe amount of current.
Term
 How does a fuse stop an overloaded circuit.
Definition
 A tiny metal strip melts when a certain amout of current flows through it thus opening the circuit and stopping the flow of current.
Term
 What does a circuit breaker do?
Definition
 It opens the swithch to stop the flow of current.
Term
 What are the two types of circuit breakers?
Definition
 Magnets and bimetalic.
Term
 How do you find the total resistance in a parallel circuit?
Definition
 1/req+1/R1+1/R2 etc.
Supporting users have an ad free experience!