Chapter 3 - Electricity (3.1) Part 1 Flashcards

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1
Q

What is the measurement of electric charge

A

Coulombs ( C )

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2
Q

What is the charge of 1 electron

A

-1.6x10^-19

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3
Q

What is the equation for charge?

A

Number of electrons x Charge of an electron

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4
Q

Definition of current?

A

The rate of movement of current

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5
Q

When does current occur?

A

When a charged particle that is free to move experiences an electric force. The particle is accelerated by the force.

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6
Q

What is the formula for current?

A

Current = charge passing a point / time for charge to pass

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7
Q

What are Ionic charge carriers?

A

Charged particles that aren’t electrons that can carry electricity ( can move through object like electric current) for example aluminium ions

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8
Q

SI units for 1 Ampere?

A

1 C/s

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9
Q

What is charge?

A

The cause of electromagnetic force and the basic aspect to describe electrical effects

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10
Q

Equation for voltage?

A

Energy transferred / Charge passing point

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11
Q

What is the correct term for the voltage going into a circuit?

A

Electromotive force (EMF)

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12
Q

What is the correct term for the voltage being transformed into other forms of energy?

A

Potential difference

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13
Q

What is the amount of energy per 1 electron volt ?

A

1 eV = 1.6x10^-19 J

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14
Q

Equation for resistance

A

R = V / I

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15
Q

If a component through which current is proportional to the voltage. What is the component referred to as?

A

An Ohmic Conductor, because it follows ohms law

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16
Q

Shape of filament lamp graph (Current against PD)

A

S shaped

17
Q

Shape of I-V graph for diode?

A

L shape lying on its back

18
Q

Shape of IV graph for thermistor

A

S but inverted

19
Q

What does ohms law state?

A

Ohm’s law states that the current through a component is directly proportional to the voltage across it providing temperature remains the same

20
Q

What is resistance?

A

The opposition to flow of electrical current