Force fields (AQA A-Level Physics): Flashcards
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Define force field
Define force field
Region where object experiences non-contact force
What does field line density indicate?
What does field line density indicate?
Strength of the field
Gravitational fields formed by interaction of what?
Gravitational fields formed by interaction of what?
Masses
Electric fields created by interaction of what?
Electric fields created by interaction of what?
Charges
Nature of gravitational force
Nature of gravitational force
Always attractive
Nature of electric force
Nature of electric force
Can be attractive or repulsive
Gravitational fields act on what?
Gravitational fields act on what?
Mass
Electric fields act on what?
Electric fields act on what?
Charge
Define equipotential surface
Define equipotential surface
Surface where potential energy of object is constant
If distance doubles, force becomes (inverse-square law)
If distance doubles, force becomes (inverse-square law)
One-fourth as strong