# Physics

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The sum of the currents leaving any junction is always equal to the sum of the currents that entered it.
kirchhoff's first law
1 of 10
Energy cannot be created or destroyed
conservation of energy
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An example of a non-ohmic device
bulb
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A measure of the opposition a material exerts against the flow of electrons.
resistance
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It can be defined as the amount of work done per unit charge.
voltage
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It is a measure of the amount of charge moving per second.
current
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The unit of current
amp
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Unit of charge
coulomb
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The flow of charge from the positive terminal to the negative terminal of a power supply
conventional current
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The total voltage across a circuit loop is equal to the sum of the voltage drops across the devices in that loop
kirchhoff's second law
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## Other cards in this set

### Card 2

#### Front

Energy cannot be created or destroyed

#### Back

conservation of energy

### Card 3

#### Front

An example of a non-ohmic device

### Card 4

#### Front

A measure of the opposition a material exerts against the flow of electrons.

### Card 5

#### Front

It can be defined as the amount of work done per unit charge.