# Physics Unit 1 section 2 sensing

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• Created by: Harish
• Created on: 08-04-13 21:07
curent
rate of flow of charge. I = Q/t, I = V/R
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charge
(coulomb)Q = Ixt,
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volt/p.d
Potential difference is the amount of energy involved in moving a charge from one place to another, such as between two points in a circuit, a.k.a energy per unit charge V = IxR, V=W/Q
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E.M.F
The influence that makes current flow from lower to higher potential(inside the battery) is called EMF.
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power
rate at which energy is provided. P(W,watts)= IxV, P= I^2xR, P = V^2IR
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Energy
E = Pxt (where p is the power(watts)
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series circuit(same,Different)
same = current, different = volt/p.d(different in each component but total the main)
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parallel circuit(same,Different)
same = volt/p.d, different = current(different in each component but total the main)
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conductance
measure of how well a component in a circuit conduct electricity. G = I/V = 1/R
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Difference between e.m.f and p.d
energy transferred TO a charge is E.M.F & Energy transerd From a charge is P>D
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## Other cards in this set

### Card 2

charge

#### Back

(coulomb)Q = Ixt,

### Card 3

volt/p.d

#### Back ### Card 4

E.M.F

#### Back ### Card 5

power

#### Back 