Term
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Definition
the amount of charge Q passing through the conductor per unit time Δt.
I = Q/Δt
expressed in amperes (1A = 1C/s) |
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Term
| Kirchhoff's Junction Rule |
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Definition
| the sum of currents directed into a point equals the sum of currents directed away from that point |
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Term
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Definition
| Around any closed circuit loop, the sum of voltage sources will alway be equal to the sum of voltage (potential) drops |
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Term
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Definition
V = IR
V is the voltage drop
I is the current
R is the magnitude of the resistance |
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Term
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Definition
the rate at which energy is dissipated by a resistor is the power of the resistor
P = IV = I2R = V2/R |
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Term
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Definition
| The total resistance of the circuit can be found by adding the individual resistances together |
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Term
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Definition
| 1/Rtotal = 1/R1 + 1/R2 etc |
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Term
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Definition
C = Q/V = ε0(A/d)
If voltage V is applied across the plates of a capacitor and a charge Q collects on it then capacitance is C in farads (F).
ε is the permittivity of free space (8.85 x 10-12 F/m), A is the overlap of the two plates of the capacitor, d is the distance apart |
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Term
| potential energy stored in a capacitor |
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Definition
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Term
| capacitors in series and parallel |
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Definition
| the capacitance of capacitors in series is calculated like resistors in parallel and the capacitance of capacitors in parallel is calculated like resistors in series. |
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