Electric Field (Grade 11 NSC Matric Physical Sciences): Flashcards

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Electric Field
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Definition: electric field

Region where electric charge experiences a force

Electric field direction reference

Direction positive test charge would move

Field lines: positive charge

Point radially outward

Field lines: negative charge

Point radially inward

Electric field strength formula

E=FqE = \frac{F}{q}

Electric field units

Newtons per coulomb (N⋅C−1\text{N} \cdot \text{C}^{-1})

Field from point charge formula

E=kQr2E = \frac{kQ}{r^2}

Force from electric field

F=qEF = qE

Closer field lines indicate

Stronger electric field

Can field lines cross?

No, never touch or cross

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