# Shared Flashcard Set

## Details

Physics-Electrostatics and Magnetism
Topics and Equations for MCAT topic Electrostatics and Magnetism
17
Physics
06/27/2020

Term
 Insulator
Definition
 Object that doesn't distribute charge over its surface and doesn't transfer charge to other objects easily
Term
 Conductor
Definition
 Object can distribute charge over its surface and can transfer charge to other objects easily
Term
 Coulomb's Law
Definition
 [image]: where q are point charges and r is the distance between the chages. k= 8.99e9
Term
 Electric Field Equation Caused by a Charge
Definition
 E = kQ/r2: where Q is the source charge and r is the distance between the source charge and electric field detector E = Fe/q: where q is the test charge and Fe is the electrostatic force E = V/r: where V is the electric potential
Term
 What is the Direction of the Electric Field?
Definition
 The direction that a positive test charge would move if put in the electric field.
Term
 Electric Potential Energy
Definition
 U=kQq/r: where Q is the source charge, q is the test charge, and k is a constant with a value of 8.99e9
Term
 What Does a Change in the Electric Potential Energy Mean?
Definition
 A decrease in U causes an increase in stability between the charges
Term
 Electric Potential Equation
Definition
 V=U/q: where U is the electric potential energy and q is the test charge V=kQ/r: where Q is source charge and k is a constant with a value of 8.99e9
Term
 How does a positive test charge spontaneously move?
Definition
 Positive test charge moves from a high electric potential to a low potential which is negative work being done on the test charge leading to a decrease in the electric potential energy
Term
 How does a negative test charge spontaneously move?
Definition
 Negative test charge moves from a low electric potential to a high potential which is negative work being done on the test charge leading to a decreasing electric potential energy
Term
 Electric Dipole Equation
Definition
 p=qd
Term
 Magnetic Field Equation
Definition
 B=μI/2πr: where μ is the permeability constant of 4πe-7
Term
 Magnetic Field of a Circular Wire Equation
Definition
 B= μI/2r: where μ is the permeability constant of 4πe-7
Term
 Right Hand Rule for Magnetic Fields
Definition
 Thumb: Points in the direction of the current Fingers: Wrap around wire Direction of the magnetic field: direction that the fingers are wrapping
Term
 Force of a Magnetic Field on a Moving Charge
Definition
 F = qvB sinθ: where θ is the angle < 180 degrees between the velocity and the magnetic field
Term
 Force of a Magnetic Field on a Current-Carrying Wire
Definition
 F = ILBsinθ: where θ is the angle < 180 degrees between the wire and the magnetic field and L is the length of the wire
Term
 Right Hand Rule for the Direction of a Magnetic Force
Definition
 Thumb: Direction of Velocity(moving charge) or Wire(wire) Finger: Direction of Magnetic Field Direction of the Force of a Positive Charge: Palm Direction of the Force of a Negative Charge: Back of Hand
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