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18 Cards in this Set
- Front
- Back
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What is the fundamental unit of charge?
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The electron (e)
Note: quarks are even smaller |
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What is the SI unit of charge?
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Coulomb (C)
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What is the charge of the electron?
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-1.602 x 10^-19 C
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What is the charge of the proton?
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+1.602 x 10^-19 C
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What is the charge of the neutron?
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0 C
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What is the mass of the electron?
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9.11 x 10^-31 kg
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What is the mass of the proton?
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1.673 x 10^-27 kg
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What is the mass of the neutron?
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1.675 x 10^-27 kg
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What is induction?
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Rearrangement of electrons present in an object. Requires no contact. Can only attract (object being induced ends up with opposite charge).
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What are conductors?
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Objects in which electrons can move freely through (metals).
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How do you discharge a conductor?
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Grounding: make pathway from conductor to the earth.
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What are insulators?
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Objects in which electrons cannot move freely through (glass, plastic, rubber, wood).
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Coulomb's Law
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Felec = Ke * (|q1||q2|)/r^2
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Ke = ?
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8.99 x 10^9 N m^2/C^2
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What is the relationship between electric force and electric field?
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Felec = q0E
(Note: Always holds true. F and E are vectors.) |
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What is equation for the electric field of a point charge (or sphere)?
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Epointcharge = Ke * (q/r^2)
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For a positive point charge, in which direction is the electric field produced directed?
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Away from source charge.
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For a negative point charge, in which direction is the electric field produced directed?
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Toward the source charge.
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