Current Electricty⚡️ Flashcards

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1
Q

Conductor

A

Are substance which allow election current to flow through them freely

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2
Q

Insulators

A

Are substances which do not allow electric current to flow through them.

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3
Q

Closed circuit

A

Is needed for the current to flow, if there is a break in the circuit then the current won’t flow.

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4
Q

Energy provided

A

By a battery or power pack,it is needed to move the current around the circuit

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5
Q

The battery pumps electrons

A

From it negative ends around a circuit

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6
Q

The electrons are attracted

A

Back to the positive end of the battery

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7
Q

Potential difference

A

The difference in the electrical pressure between the positive end of a battery/ power pack

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8
Q

Whenever there is a potential difference

A

Electricity will flow

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9
Q

This potential difference is know as

A

Voltage and is measured in volts

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10
Q

Resistance

A

is the opposition to the flow of electrons. The unit is the Ohm () and it is measured using an ohmmeter

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11
Q

Ohm’s law

A

Ohm’s law states that voltage is directly proportional to current

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12
Q

Direct current (DC)

A

DC goes in one direction only.

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13
Q

Alternating current (AC)

A

AC current changes very quickly, many times a second.

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14
Q

Electric current

A

Is a flow of electric charge (electrons)

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