# Shared Flashcard Set

## Details

Topic 9 electric fields
Physics cards
5
Physics
06/27/2017

Term
 [image] Field lines
Definition
 Show direction of force acting on stationary charge in a field  - never cross  - spacing proportional to field strength  arrows show direction
Term
 Electric field strength
Definition
 Force per unit positive charge in an electric field SI unit: N/C E=F/Q where E=change in v/change in d
Term
 [image] Uniform electric fields
Definition
 Force on a charge in a uniform field is the same everywhere E= change in p.d. Across plates/ plate separation Unit: V/m or N/C
Term
 Motion of charged particles in a field[image]
Definition
 +ve charge moves in direction of field -ve charge moves against direction of field follows parabolic path when fired perpendicular to field  path before/after is straight as no resultant force is acting
Term
 Coulomb
Definition
 Charge flowing per second past a point in a circuit with a current of 1 ampere
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