Electricity 

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What are Fuses?

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16 Terms

1

What are Fuses?

Used to break if too much current flows through the circuit.

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2

What are ammeters?

are used to measure current, connected in a series circuits.

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3

What is Potential difference?

is equal to current multiples by resistance- V= IR.

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4

What are Diodes?

They only allow current to flow in one direction which is why they only show a current when potential difference is positive.

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5

What is a Battery

Made up of 2 or more cells, act in the same way as a cells, a filament lamp is a small light bulb.

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6

What is a circuit

Closed loop with a power source and something for electrons to flow through.

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7

What is Resistance?

Everything that resists or opposes the flow of electrons, measured in Ohms (?)

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8

What are Voltmeters?

Used to measure potential difference, connected in parallel circuits.

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9

What are Cells

Used to provide electric power.

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10

How is flow of electricity controlled?

Switches

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11

What are Filament Lamps?

Lamps that contain filament that heat up until it so hot that it emits light, which increases the resistance.

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12

What are Light Emmitting Diodes?

Emit light when current flows through in a forward direction.

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13

What is Potential Difference?

The force driving the flow of electrons, provided by cell /battery measured in Volts (V)

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14

How is a Cell drawn?

Long line is the positive terminal, short line is the negative terminal.

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15

What is the conventional current?

Electrons travel from Negative to positive terminal, however scientist originally thought it went from positive to negative

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16

What is Q=It?

Charge equals current multipled by time

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