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physics > electricity test 5/10 > Flashcards

electricity test 5/10 Flashcards

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Physics 101 flashcards AP® Physics flashcards
1
Q

A characteristic of certain fundamental particles.

A

charge

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2
Q

What is the variable for “CHARGE”

A

q

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3
Q

The unit for quantity of charge is

A

coulomb

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4
Q

What is the Universal Electrostatic Constant

A

K 9x10^-19

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5
Q

The rate at which electric charge
flows

A

Current

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6
Q

The unit for flow of charge (current) is

A

Amp (A)

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7
Q

Electric potential energy per unit of charge;
electric “oomph.”

A

Voltage

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8
Q

The unit for electric potential difference (voltage) is

A

volt

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9
Q

A measure of the of obstruction to flow of
electric charge that a body possesses

A

Resistance

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10
Q

What is resistance measured in?

A

ohm

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11
Q

In a series circuit, there is/are how many paths for current to flow?

A

One

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12
Q

In a parallel circuit, there is/are how many paths for current to flow?

A

more than one

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13
Q

When a balloon is rubbed on a child’s hair, the balloon develops a negative charge. This is because?

A. protons are transferred from the balloon
to the hair

B. protons are transferred from the hair to
the balloon

C. electrons are transferred from the balloon
to the hair

D. electrons are transferred from the
hair to the balloon

A

D. electrons are transferred from the
hair to the balloon

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14
Q

According to the picture above, what will be the reading on the voltmeter if you add another light bulb in parallel?

A

It will stay the same

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15
Q

The current through each bulb in series
___________ the total current provided by the
batteries in series.

A

is equal to

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16
Q

The sum of the potential drops across all of the bulbs in series __________ the total potential
provided by the batteries in series.

A

is equal to

17
Q

In the series circuit pictured above, the
______________ is the same throughout the circuit.

A

current

18
Q

Materials that allow charges to NOT move
about easily are called

A

insulators

19
Q

Materials that allow charges to move
about easily are called

A

conductors

20
Q

the study of electrical charges at rest

A

electrostatics

21
Q

the study of electrical chargers in motion

A

electrodynamics

22
Q

who said 2 opposite types of charges exist (positive & negative)

A

Benjamin Franklin

23
Q

the rod TOUCHES the electroscope.
electroscope has SAME CHARGE as rod.

A

charged by conduction

24
Q

the rod DOES NOT TOUCH the electroscope.
electroscope has OPPOSITE CHARGE as rod.

A

charged by induction

25
Q

the force between two charged objects is directionally proportional to the product of their charges and inversely proportional to their separation distance squared

A

coulombs law

26
Q

What does F stand for? What is it measured in?

A

force of attraction
newtons

27
Q

What is the SI unit of charge

A

coulomb

28
Q

What is electric force

A

a vector

29
Q

what is 1.60 x 10 ^-19 C

A

elementary charge

30
Q

What is electric current

A

the moving of electrons

can be positive or negative, usually negative through conducting metal

31
Q

determines the amount of current flow / ratio of potential difference to current

A

resistance

32
Q

ratio of potential difference to current is constant

A

ohm’s law

33
Q

measures current

A

ammeter

34
Q

measures electric potential difference

A

voltmeter

35
Q

What is Kirchhoff’s Rules?

A

Loop Rule

Junction Rule

36
Q

the sum of the POTENTIAL DIFFERENCE (VOLT) around any CLOSED circuit loop is ZERO.

A

loop rule

37
Q

the sum of the all CURRENTS entering the junction must equal the sum of all CURRENTS leaving the junction.

A

junction rule

38
Q

What is conventional current?

A

positive to negative (ben franklin)

physics (4 decks)

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