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WikiCards · Card list · Science cards · Electric displacement field
Uncommon card · Science
Electric displacement field, an Uncommon card
In physics, the electric displacement field, also called electric flux density, is a vector field that appears in Maxwell's equations.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 57
- DEF
- 22
- Power
- 79
- Wikipedia reads a year
- 38,000
Power 79 (ATK + DEF): stronger than 20 % of WikiCards cards.
Electric displacement field quiz: 3 questions
Three questions on the Electric displacement field card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
The rate of ______ of D, ∂D/∂t, is the displacement current density.
Answer
change. The rate of change of D, ∂D/∂t, is the displacement current density. From the Electric displacement field article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Communication channel. Communication channel 60 · Electric displacement field 57 · Atrophy 53 · Mineral water 49 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Atrophy. Atrophy 100,000 · Mineral water 54,000 · Electric displacement field 38,000 · Communication channel 30,000 Wikipedia reads over a year.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- It accounts for the electromagnetic effects of polarization and that of an electric field, combining the two in an auxiliary field.
- It plays a major role in the physics of phenomena such as the capacitance of a material, the response of dielectrics to an electric field, how shapes can change due to electric fields in piezoelectricity or flexoelectricity as well as the creation of voltages and charge transfer due to elastic strains.
- The rate of change of D, ∂D/∂t, is the displacement current density.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Electric displacement field article was read about 38,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 57 and blocks with 22: each hit it takes is cut by 9 %.
How to get Electric displacement field
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
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Cards close in power
The cards just above and just below Electric displacement field in the power ranking, all domains together.
- ZygophyllalesUncommon · Nature · ATK 46 DEF 33
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- CoffeemakerUncommon · Science · ATK 49 DEF 30
- Nicomedes IV of BithyniaUncommon · History · ATK 51 DEF 28
- Ground stateUncommon · Science · ATK 57 DEF 22
- Terrance DrewUncommon · History · ATK 52 DEF 27
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Electric displacement field (revision), CC BY-SA 4.0. Photo : MikeRun, CC BY-SA 4.0, Wikimedia Commons.
