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3RD QUARTER EXAM > 3rd quarter exam (Gen Physics II) > Flashcards

3rd quarter exam (Gen Physics II) Flashcards

1
Q

refers to the flow of electric charge. It is a fundamental concept in understanding how electricity works.

A

CURRENT

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2
Q

One basic characteristic of materials that measures how much they can obstruct the flow of electricity is called

A

RESISTIVITY

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3
Q

is a force that opposes the flow of current.

A

Electrical resistance

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4
Q

are used to express resistance values

A

Ohms (Ω)

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5
Q

is the opposition that an electrical device has to the flow of electrical current.

A

Resistance

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6
Q

is a measure of the opposition to current flow in an electrical circuit.

A

Resistance

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7
Q

States that the current is directly proportional to the voltage and inversely proportional to its resistance.

A

OHM’S LAW

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8
Q

The Ohm’s law was named after the German physicist

A

Georg Ohm

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9
Q

The total amount of work done to force the current flow through an electric circuit

A

Energy

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10
Q

How much energy generated or consumed instantaneously (at any insta) OR the rate of transferred energy per unit time

A

Power

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11
Q

are objects that produce magnetic fields and attract metals like iron, nickel and cobalt.

A

Magnets

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12
Q

is no longer familiar in the study of magnetism because practically all magnets nowadays are artificial.

A

the Iodestone or the natural magnet

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13
Q

Common magnet

A

Horseshoe magnet

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14
Q

Bar magnets has

A

north pole and south pole

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15
Q

a bar magnet that always points north

A

compass

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16
Q

like poles __ and opposite poles ___

A

repel and attract may

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17
Q

iron, colbalt, and nickle can lead to

A

ferromagnetism

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18
Q

the person that describes the magnetic field through magnetic lines of force

A

Michael Faraday (1820)

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19
Q

the magnetic poles are about __ from the geographic poles

A

1500 km

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20
Q

the magnetic poles arise due to the distribution of iron in ___

A

earth’s core

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21
Q

Collision with atmospheric particles produce

A

Aurora borrealis (northern lights)

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22
Q

the area around a magnet, magnetic object, or an electric charge in which magnetic force is exerted.

A

Magnetic Field

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23
Q

Magnetic field affect the paths of

A

Charged particles

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24
Q

technique used to show the direction of field

A

Right hand rule

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25
Q

the force experienced by a charged particle moving through an electromagnetic field. This will cause the electron to experience a sideways force perpendicular to both its velocity and the magnetic field direction. This force will cause the electron to curve its path.

A

Lorentz force

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26
Q

the Lorentz force law is after the Dutch physicist

A

Hendrik Antoon Lorentz

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26
Q

the particle will experience a force in the direction of the field, regardless of the motion of the particle

A

electric field

26
Q

the particle will experience a force perpendicular to both the field direction and its direction of travel.

A

magnetic field

26
Q

The trajectory of a charged particle in an electric field will tend to be a straight line or a curve, while the general trajectory of a charged particle in a magnetic field will be a spiral.

A

true

27
Q

In Electric charge, protons give what kind of charges?

A

Positive Charge

28
Q

In Electric charge, Electrons give what kind of charges?

A

Negative Charge

29
Q

In Electric charge, Neutrons give what kind of charges?

A

Zero Charge

30
Q

What unit of measurement is given to the value of an electron/proton

A

Coulombs

31
Q

Electric charge has a constant as expressed in Coulombs, C.

A

Discrete Natural Units/ Coulombs

32
Q

It is an intrinsic property of property of particles that makes up all matter, charge can be positive and negative.

A

Electric Charge

33
Q

Is an equation that gives the magnitude and direction of the electrostatic force between two charged objects.

A

Coulombs Law

34
Q

In the coulombs law of equation, it refers to the straight-line distance between the two charges.

A

r

35
Q

Units for electrostatic force of each object

A

F

36
Q

Charges can be able to move freely.

A

Conductor

37
Q

Charges cannot be able to move freely.

A

Insulator

38
Q

Charging by rubbing different materials against each other.

A

Friction

39
Q

Charging of neutral object by contact with an already charged object.

A

Conduction

40
Q

Charging of neutral object without contact of other charged objects.

A

Induction

41
Q

A device used to store electric charge.

A

Capacitor

42
Q

The Dielectric Constant (K) of glass Pyrex is equivalent to?

A

5

43
Q

The Dielectric Constant (K) of Neoprene is equivalent to?

A

6.7

44
Q

The Dielectric Constant (K) of Paper is equivalent to?

A

3

45
Q

The Dielectric Constant (K) of Polyethylene is equivalent to?

A

2.5

46
Q

The Dielectric Constant (K) of Drywood is equivalent to?

A

2.9

47
Q

It is an electronic device used to store energy and create its own energy and power.

A

Capacitor

48
Q

What indicates negative terminal in a capacitor?

A

stripes

49
Q

Capacitors contain an insulating material made mostly of?

A

Aluminium

50
Q

It is the part responsible for non-touching of Electrodes.

A

Dielectric

51
Q

In dielectrics, molecules are neutral unless attached to charged terminals this process is called.

A

Polarization

52
Q

Biot-Savart Law was created by two french physicists

A

Jean Baptiste Biot and Felix Savart in 1820

53
Q

is an equation describing the magnetic field generated by a constant electric current.

A

Biot-Savart Law

54
Q

The magnitude of the magnetic field (dB) and the length of the element (dl) is directly proportional to the current (I). While, the square of the distance r is inversely proportional to it.

A

true

55
Q

is a useful law that relates the net magnetic field doing a closed loop to the electric field current passing through the loop.

A

Amphere’s law

56
Q

Amphere’s law is first discovered by

A

Andre-marie ampere in 1825.

57
Q

he realized that the equation provided by the ampere was incomplete, and extended his law by including that the magnetic field arises due to the electric current by giving a mathematical formulation.

A

James Clerk Maxwell

58
Q

All currents have to be steady and do not change with time.

Only currents crossing the area inside the path are taken into account.

Current have to be taken with their algebraic sign by using the Right Hand Rule.

A

true

59
Q

a device that is used to detect a small electric current or measure its magnitude.

A

Galvanometer

60
Q

(also known as a volt-ohm-milliammeter, volt-ohmmeteror VOM) isa measuring instrument that can measure multiple electrical properties.

A

Multimeter

61
Q

(abbreviation of Ampere meter) isan instrument used to measure the current in a circuit.

A

Ammeter

62
Q

instrument that measures voltages of either direct or alternating electric current on a scale usually graduated in volts, millivolts (0.001 volt), or kilovolts (1,000 volts).

A

Voltmeter

3RD QUARTER EXAM (6 decks)

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