Electricity - Revision history

Conrad: Remove the Rows section (anchor names are documented on Template:Rt)

2026-10-25T21:52:23Z

Remove the Rows section (anchor names are documented on Template:Rt)

Conrad: Row anchors as zero-height blocks above the image, so a row link shows the whole table

2026-10-25T21:41:18Z

Row anchors as zero-height blocks above the image, so a row link shows the whole table

Conrad: Show the official table image instead of a wikitext copy; row anchors now land on the image

2026-10-25T21:40:08Z

Show the official table image instead of a wikitext copy; row anchors now land on the image

Conrad: Make the Regents Exam Questions table scroll sideways on narrow screens instead of widening the page

2026-10-25T21:31:32Z

Make the Regents Exam Questions table scroll sideways on narrow screens instead of widening the page

Conrad: Physics reference tables (2025 Edition): new reference table page

2026-10-25T20:28:24Z

Physics reference tables (2025 Edition): new reference table page

New page

{{Physreftable
|name=Electricity
|prev=The Electromagnetic Spectrum (Physics)
|next=Circuit Symbols
|desc=Electricity equations from the NYS Physics Reference Tables (2025 Edition): Coulomb's law, electric field, work and potential difference, electrical power and energy, Ohm's law and current, with their variables.
}}
The '''Electricity''' page of the ''Reference Tables for Physical Science: Physics'' (2025 Edition) is the electricity equation sheet: seven equations with the meaning of their variables. Coulomb's law, the electric-field equation and ''W'' = ''qV'' support [[HS-PS2-4]] and [[HS-PS3-5]]; Ohm's law, power, electrical energy and current support [[HS-PS3-6]], together with the [[Circuit Symbols]], [[Series Circuits]] and [[Parallel Circuits]] boxes on the same page. Every equation has its own row anchor.

<div style="display:flex;flex-wrap:wrap;gap:16px 32px;align-items:flex-start;">
<div style="min-width:0;">
{| class="wikitable" style="text-align:center;"
! Equations
|- id="coulomb"
| style="padding:8px 16px;" | ''F''e = ''kq''1''q''2''r''2
|- id="electric-field"
| style="padding:8px 16px;" | ''F''e = ''qE''
|- id="w-qv"
| style="padding:8px 16px;" | ''W'' = ''qV''
|- id="electric-power"
| style="padding:8px 16px;" | ''P'' = ''VI'' = ''I''2''R'' = ''V''2''R''
|- id="electrical-energy"
| style="padding:8px 16px;" | ''W'' = ''Pt'' = ''VIt'' = ''I''2''Rt'' = ''V''2''t''''R''
|- id="ohm"
| style="padding:8px 16px;" | ''V'' = ''IR''
|- id="current"
| style="padding:8px 16px;" | ''I'' = Δ''q''''t''
|}
</div>
<div style="min-width:0;">
{| class="wikitable"
! Variables
|-
| ''E'' = electric field strength
|-
| ''F''e = electrostatic force
|-
| ''I'' = current
|-
| ''k'' = electrostatic constant
|-
| ''P'' = power
|-
| ''q'' = charge
|-
| ''r'' = distance between centers
|-
| ''R'' = resistance
|-
| ''R''eq = equivalent resistance
|-
| ''t'' = time interval
|-
| ''V'' = potential difference
|-
| ''W'' = work ''or'' electrical energy
|-
| Δ = change
|}
</div>
</div>

== What the electricity page shows ==
'''Electrostatics.''' ''F''e = ''kq''1''q''2/''r''2 is Coulomb's law, with ''k'' from the [[List of Physical Constants#electrostatic-constant|List of Physical Constants]]; it has the same inverse-square form as [[Motion and Forces#gravitation|universal gravitation]], which is the comparison [[HS-PS2-4]] asks for. ''F''e = ''qE'' relates the force on a charge to the electric field strength (the 2006 edition wrote it as ''E'' = ''F''e/''q''), and ''W'' = ''qV'' gives the work done moving a charge through a potential difference (the 2006 edition's ''V'' = ''W''/''q''). A charge in elementary charges is converted to coulombs with ''e'' from the constants list.

'''Circuits.''' ''V'' = ''IR'' is Ohm's law and ''I'' = Δ''q''/''t'' defines current. The power and energy lines give every combination of ''V'', ''I'' and ''R'': ''P'' = ''VI'' = ''I''2''R'' = ''V''2/''R'', and ''W'' = ''Pt'' for the energy used in a time ''t''. The 2006 edition also gave the resistance of a wire, ''R'' = ρ''L''/''A'', with a table of resistivities; neither is on the 2025 tables.

== Rows ==
Each row of the table has an anchor, so a link or an <code><nowiki>{{Rt}}</nowiki></code> chip ([[Template:Rt]]) can point at one equation or constant:
* <code>coulomb</code> – ''F''e = ''kq''1''q''2/''r''2
* <code>electric-field</code> – ''F''e = ''qE''
* <code>w-qv</code> – ''W'' = ''qV''
* <code>electric-power</code> – ''P'' = ''VI'' = ''I''2''R'' = ''V''2/''R''
* <code>electrical-energy</code> – ''W'' = ''Pt'' = ''VIt''
* <code>ohm</code> – ''V'' = ''IR''
* <code>current</code> – ''I'' = Δ''q''/''t''

== Regents Exam Questions ==
Released Regents questions that cannot be answered without this table, listed by exam. Each link opens the question with its answer key; the standard is the one the question assesses.

{| class="wikitable" style="width:100%; text-align:center"
! style="padding: 0.5em 1.5em;" | Exam
! style="padding: 0.5em 1.5em;" | Cluster
! style="padding: 0.5em 1.5em;" | Question
! style="padding: 0.5em 1.5em;" | Standard
! style="padding: 0.5em 1.5em;" | Row
|-
| rowspan="5" style="background-color:white;" | [[June 2026 Physics Exam|June 2026 Physics Regents]]
| style="background-color:white;" | [[Questions:Heat Exchange|Heat Exchange]]
| style="background-color:white;" | [[Questions:Heat Exchange#q4|Question 14]]
| style="background-color:white;" | [[HS-PS3-4]]
| style="background-color:white;" | ''W'' = ''Pt'' = ''VIt''
|-
| style="background-color:white;" | [[Questions:Flashlight Physics|Flashlight Physics]]
| style="background-color:white;" | [[Questions:Flashlight Physics#q3|Question 32]]
| style="background-color:white;" | [[HS-PS3-6]]
| style="background-color:white;" | ''V'' = ''IR''
|-
| style="background-color:white;" | [[Questions:Flashlight Physics|Flashlight Physics]]
| style="background-color:white;" | [[Questions:Flashlight Physics#q4|Question 33]]
| style="background-color:white;" | [[HS-PS3-6]]
| style="background-color:white;" | ''V'' = ''IR''
|-
| style="background-color:white;" | [[Questions:Flashlight Physics|Flashlight Physics]]
| style="background-color:white;" | [[Questions:Flashlight Physics#q5|Question 34]]
| style="background-color:white;" | [[HS-PS3-6]]
| style="background-color:white;" | ''W'' = ''Pt'' = ''VIt''
|-
| style="background-color:white;" | [[Questions:Charged Drops|Charged Drops]]
| style="background-color:white;" | [[Questions:Charged Drops#q4|Question 49]]
| style="background-color:white;" | [[HS-PS2-4]]
| style="background-color:white;" | ''F''e = ''qE''
|}

← Older revision		Revision as of 21:52, 25 October 2026
Line 14:		Line 14:

	'''Circuits.''' ''V'' = ''IR'' is Ohm's law and ''I'' = Δ''q''/''t'' defines current. The power and energy lines give every combination of ''V'', ''I'' and ''R'': ''P'' = ''VI'' = ''I''<sup>2</sup>''R'' = ''V''<sup>2</sup>/''R'', and ''W'' = ''Pt'' for the energy used in a time ''t''. The 2006 edition also gave the resistance of a wire, ''R'' = ρ''L''/''A'', with a table of resistivities; neither is on the 2025 tables.		'''Circuits.''' ''V'' = ''IR'' is Ohm's law and ''I'' = Δ''q''/''t'' defines current. The power and energy lines give every combination of ''V'', ''I'' and ''R'': ''P'' = ''VI'' = ''I''<sup>2</sup>''R'' = ''V''<sup>2</sup>/''R'', and ''W'' = ''Pt'' for the energy used in a time ''t''. The 2006 edition also gave the resistance of a wire, ''R'' = ρ''L''/''A'', with a table of resistivities; neither is on the 2025 tables.
−
−	~~== Rows ==~~
−	~~A link or an <code><nowiki>{{Rt}}</nowiki></code> chip ([[Template:Rt]]) can point at one equation or constant with these anchors; each one lands on the table above:~~
−	* <code>coulomb</code> – ''F''<sub>e</sub> = ''kq''<sub>1</sub>''q''<sub>2</sub>/''r''<sup>2</sup>
−	* <code>electric-field</code> – ''F''<sub>e</sub> = ''qE''
−	* <code>w-qv</code> – ''W'' = ''qV''
−	* <code>electric-power</code> – ''P'' = ''VI'' = ''I''<sup>2</sup>''R'' = ''V''<sup>2</sup>/''R''
−	* <code>electrical-energy</code> – ''W'' = ''Pt'' = ''VIt''
−	* <code>ohm</code> – ''V'' = ''IR''
−	* <code>current</code> – ''I'' = Δ''q''/''t''

	== Regents Exam Questions ==		== Regents Exam Questions ==

@@ Line 7: / Line 7: @@
 The '''Electricity''' page of the ''Reference Tables for Physical Science: Physics'' (2025 Edition) is the electricity equation sheet: seven equations with the meaning of their variables. Coulomb's law, the electric-field equation and ''W'' = ''qV'' support [[HS-PS2-4]] and [[HS-PS3-5]]; Ohm's law, power, electrical energy and current support [[HS-PS3-6]], together with the [[Circuit Symbols]], [[Series Circuits]] and [[Parallel Circuits]] boxes on the same page. Every equation has its own row anchor.
-<span id="coulomb"></span><span id="electric-field"></span><span id="w-qv"></span><span id="electric-power"></span><span id="electrical-energy"></span><span id="ohm"></span><span id="current"></span>[[File:Electricity.png|760px|class=img-fluid|alt=Electricity from the Physics Reference Tables (2025 Edition)]]
+<div id="coulomb"></div><div id="electric-field"></div><div id="w-qv"></div><div id="electric-power"></div><div id="electrical-energy"></div><div id="ohm"></div><div id="current"></div>
 == What the electricity page shows ==

@@ Line 7: / Line 7: @@
 The '''Electricity''' page of the ''Reference Tables for Physical Science: Physics'' (2025 Edition) is the electricity equation sheet: seven equations with the meaning of their variables. Coulomb's law, the electric-field equation and ''W'' = ''qV'' support [[HS-PS2-4]] and [[HS-PS3-5]]; Ohm's law, power, electrical energy and current support [[HS-PS3-6]], together with the [[Circuit Symbols]], [[Series Circuits]] and [[Parallel Circuits]] boxes on the same page. Every equation has its own row anchor.
-<div style="display:flex;flex-wrap:wrap;gap:16px 32px;align-items:flex-start;">
+<span id="coulomb"></span><span id="electric-field"></span><span id="w-qv"></span><span id="electric-power"></span><span id="electrical-energy"></span><span id="ohm"></span><span id="current"></span>[[File:Electricity.png|760px|class=img-fluid|alt=Electricity from the Physics Reference Tables (2025 Edition)]]
 == What the electricity page shows ==
@@ Line 66: / Line 15: @@
 == Rows ==
-Each row of the table has an anchor, so a link or an <code><nowiki>{{Rt}}</nowiki></code> chip ([[Template:Rt]]) can point at one equation or constant:
+A link or an <code><nowiki>{{Rt}}</nowiki></code> chip ([[Template:Rt]]) can point at one equation or constant with these anchors; each one lands on the table above:
 * <code>coulomb</code> – ''F''<sub>e</sub> = ''kq''<sub>1</sub>''q''<sub>2</sub>/''r''<sup>2</sup>
 * <code>electric-field</code> – ''F''<sub>e</sub> = ''qE''

@@ Line 78: / Line 78: @@
 Released Regents questions that cannot be answered without this table, listed by exam. Each link opens the question with its answer key; the standard is the one the question assesses.
 {| class="wikitable" style="width:100%; text-align:center"
 ! style="padding: 0.5em 1.5em;" | Exam
@@ Line 111: / Line 112: @@
 | style="background-color:white;" | ''F''<sub>e</sub> = ''qE''
 |}