# Definitions

Fields and capacitors

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Force per unit mass
Gravitational field strength
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the force of attraction between two masses is directly proportional to the product of their masses and inversely proportional to the square of the distance between them
Newton's law of gravitation
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The work done against the field in moving a unit mass from infinity to its current point
Gravitational potential
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Force per unit charge
Electric field strength
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the work done against the field in moving a +1C charge from infinity to its current point
Electric potential
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the amount of charge stored by a capacitor per volt PD across the capacitor
Capacitance
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the force on 1m of wire carrying a current of 1A at right angles to the magnetic field
Magnetic field strength
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amount of flux (unit Wb) in an area (unit m^2) (total unit Wb m^-2 = T)
Flux density
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## Other cards in this set

### Card 2

#### Front

the force of attraction between two masses is directly proportional to the product of their masses and inversely proportional to the square of the distance between them

#### Back

Newton's law of gravitation

### Card 3

#### Front

The work done against the field in moving a unit mass from infinity to its current point

### Card 4

#### Front

Force per unit charge

### Card 5

#### Front

the work done against the field in moving a +1C charge from infinity to its current point