FORCES ON CHARGED PARTICLES AND AC Flashcards

1
Q

all materials are made of

A

atoms

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1
Q

the charge of an electron is

A

negative

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2
Q

the charge on a proton is

A

positive

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3
Q

neutrons have

A

no charge

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4
Q

like charges

A

repel

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5
Q

different charges

A

attract

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6
Q

an insulator can become charged by

A

rubbing

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7
Q

charge can be detected using a

A

coulomb meter

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8
Q

an area of space where a charged particle experiences a force is known as an

A

electric field

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9
Q

lines of force are used to show the

A

strength and direction of an electric field

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10
Q

the closer the field lines ___ the force

A

stronger

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11
Q

what charge do field lines start on

A

positive

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12
Q

what charge do field lines end on

A

negative

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13
Q

current is

A

the flow of charge per second

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14
Q

what is current measured in

A

amperes

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15
Q

current is measured using an

A

ammeter

16
Q

the relationship that links current, charge and time is

A

Q=It

17
Q

An electric charge of 1200 C flows
through an electric heater in 2
minutes. Calculate the current in the heater?

A

10 A

18
Q

this type of current flows in one direction only

A

direct current

19
Q

this type of current changes a direction a number of times each second

A

alternating current

20
Q

the peak voltage of an ac supply is always _____ __ the quoted voltage

A

greater than

21
Q

Mains frequency is

A

50Hz

22
Q

Mains voltage is

A

230V