MODULE QUIZ 2

Question 1

Their contribution in the field of electricity and magnetism will be discussed in this lesson.

Answer 1

The scientists shown are James Clerk Maxwell and Heinrich Rudolf Hertz, respectively.

Question 2

The first battery was invented by Alessandro Volta

Answer 2

1800

Question 3

Oersted discovered that a compass needle ticks when placed near a current-carrying source.

Answer 3

1820

Question 4

Ampère proved that magnetic attraction and repulsion could be observed in two parallel electrical wires.

Answer 4

1827

Question 5

Faraday demonstrated that inserting a magnet through a solenoid generates current.

Answer 5

1831

Question 6

It took half a century of gradual development and the mathematical sagacity of James Clerk Maxwell to modify the works of Coulomb, Gauss, Ampère, and Faraday to unify electricity and magnetism into one consistent and symmetrical field that we know now as electromagnetism.

Answer 6

TRUE

Question 7

established that a magnetic field that varies over time generates an electric field.

Answer 7

Faraday’s law

Question 8

Maxwell corrected Ampère’s law to demonstrate that a time-varying electric field may in turn also generate a magnetic field.

Answer 8

TRUE
Electric and Magnetic Fields

Question 9

This interrelationship is the core of the four Maxwell’s equations.

Answer 9

true

Question 10

When either a magnetic or an electric field varies with time, a field of the other kind is produced adjacent to it.

Answer 10

true

Question 11

“time-varying magnetic and electric fields” create a disturbance, thus propagating in space like a wave, as shown:

Answer 11

true
Electric and Magnetic Fields

Question 12

are transverse waves that carry energy through vacuum and doesn’t need medium to propagate.

Answer 12

Electromagnetic Wave

Question 13

have the longest wavelength and lowest frequency. It has a wavelength above 1 m and frequencies below 3.0 × 10 8 Hz.

Answer 13

radio waves

Question 14

have wavelengths approximately between 1 m and one mm, and frequencies ranging from 3.0 × 108 - 3.0 × 1011 Hz.

Answer 14

microwaves

Question 15

occupies wavelengths roughly between 1 mm and 700 nm.

Answer 15

infrared

Question 16

have wavelengths ranging from 700 nm to 400 nm.

Answer 16

visible light

Question 17

has the longest wavelength and lowest frequency

Answer 17

red

Question 18

has the shortest wavelength and highest frequency.

Answer 18

violet

Question 19

are those with wavelength usually from 400 nm to 10 nm.

Answer 19

Ultraviolets

Question 20

are those with wavelength from 10 nm to 100 pm . (pm means picometers).

Answer 20

xrays

Question 21

are those with wavelength of less than 100 pm. (pm means picometers).​

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Answer 21

gamma rays

Question 22

mnemonics

Answer 22

”Raging Martians Invaded Venus Using X-ray Guns”

Question 23

The energy carried by an electromagnetic wave is proportional to the frequency of the wave. The wavelength and frequency of the wave are connected via the speed of light; this relationship is summarized by the wave equation:

Answer 23

Wave Equation

Question 24

Maxwell theorized in 1865 that an electromagnetic disturbance must happen in vacuum such that its speed is equivalent to the speed of light.

Answer 24

true
Light as an Electromagnetic Wave

Question 25

By using the Four Equations, he was able to establish the electromagnetic nature of light.

Answer 25

true Light as an Electromagnetic Wave

Question 26

PROPERTIES OF LIGHT

Answer 26

1) Light travels in straight line. 2) Light travels faster than sound 3) We see things because it reflects into our eyes. 4) Shadows are formed when light is blocked by an object. 5) When light is incident upon an object some are absorbed and some are reflected.

Question 27

the full range of electromagnetic radiation, organized by frequency or wavelength.

Answer 27

ELECTROMAGNETIC SPECTRUM