Electric Field Strength - Revision history

NRJC: /* Formula */

2024-05-24T09:02:39Z

‎Formula

NRJC at 08:21, 24 May 2024

2024-05-24T08:21:21Z

NRJC: /* Formula */

2024-05-24T08:20:59Z

‎Formula

NRJC at 08:20, 24 May 2024

2024-05-24T08:20:33Z

NRJC at 08:20, 24 May 2024

2024-05-24T08:20:24Z

NRJC at 08:20, 24 May 2024

2024-05-24T08:20:14Z

NRJC at 08:20, 24 May 2024

2024-05-24T08:20:02Z

NRJC: Created page with "==Key Stage 5== ===Meaning=== '''Electric field strength''' is the force per unit charge exerted on a small positive test [[Electrical Charge|charge]..."

2024-05-24T08:19:05Z

Created page with "==Key Stage 5== ===Meaning=== '''Electric field strength''' is the force per unit charge exerted on a small positive test [[Electrical Charge|charge]..."

New page

==Key Stage 5==
===Meaning===
'''Electric field strength''' is the [[force]] per unit [[Electrical Charge|charge]] exerted on a small positive test [[Electrical Charge|charge]] placed at a point in the [[Electric Field|field]].

===About Electric Field Strength===
*'''Electric field strength''' is given by the symbol '''𝐸'''.
*The [[unit]] of '''electric field strength''' is [[Newton]]s per [[Coulomb]] (N/C) or [[volt]]s per [[metre]] (V/m).
*The direction of the [[Electric Field|electric field]] is the direction of the [[force]] that would act on a positive test [[Electrical Charge|charge]].
*[[Electric Field|Electric fields]] can be represented by [[Field Line|field lines]]; the density of these lines indicates the '''field strength'''.

===Formula===
'''Electric Field Strength''' is given by the general formula:

<math>𝐸=\frac{𝐹}{𝑄}</math>

Where,

𝐹 is the [[force]] experienced by a [[Electrical Charge|charge]] 'Q' in the field.

and

𝑄 is the [[Electrical Charge|charge]] in that field.

The '''Electric field strength''' around a point [[Electrical Charge|charge]] is given by:

<math>𝐸=𝑘\frac{𝑄}{𝑟_2}</math>

Where:

𝑘 is the [[Coulomb's Constant|Coulomb's constant]]

𝑄 is the [[Point Charge|point charge]] causing the field

and

𝑟 is the distance from that [[Point Charge|point charge]]

Since;

<math>𝑘=\frac{1}{4\pi\varepsilon_0}</math>

Then:

<math>𝐸=\frac{1}{4\pi\varepsilon_0}\frac{𝑄}{𝑟_2}</math>

or

<math>𝐸=\frac{𝑄}{4\pi\varepsilon_0𝑟_2}</math>

Where:

<math>\varepsilon_0</math> is the [[Permittivity of Free Space|permittivity of free space]]

@@ Line 11: / Line 11: @@
 ===Formula===
 '''Electric Field Strength''' is given by the general formula:
 *<math>𝐸=\frac{𝐹}{𝑄}</math>
 Where,
 *𝐹 is the [[force]] experienced by a [[Electrical Charge|charge]] 'Q' in the field.
 *𝑄 is the [[Electrical Charge|charge]] in that field.
 The '''Electric field strength''' around a point [[Electrical Charge|charge]] is given by:
 *<math>𝐸=𝑘\frac{𝑄}{𝑟^2}</math>
 Where:
 *𝑘 is the [[Coulomb's Constant|Coulomb's constant]]
 *𝑄 is the [[Point Charge|point charge]] causing the field
 *𝑟 is the distance from that [[Point Charge|point charge]]
 Since;
 *<math>𝑘=\frac{1}{4\pi\varepsilon_0}</math>
 Then:
 *<math>𝐸=\frac{1}{4\pi\varepsilon_0}\frac{𝑄}{𝑟^2}</math>
 or
 *<math>𝐸=\frac{𝑄}{4\pi\varepsilon_0𝑟^2}</math>
 Where:
 *<math>\varepsilon_0</math>is the [[Permittivity of Free Space|permittivity of free space]]

@@ Line 17: / Line 17: @@
 *𝐹 is the [[force]] experienced by a [[Electrical Charge|charge]] 'Q' in the field.
 *𝑄 is the [[Electrical Charge|charge]] in that field.
@@ Line 31: / Line 29: @@
 *𝑄 is the [[Point Charge|point charge]] causing the field
 *𝑟 is the distance from that [[Point Charge|point charge]]

← Older revision		Revision as of 08:20, 24 May 2024
Line 50:		Line 50:
	Where:		Where:

−	: <math>\varepsilon_0</math>is the [[Permittivity of Free Space\|permittivity of free space]]	+	*<math>\varepsilon_0</math>is the [[Permittivity of Free Space\|permittivity of free space]]

← Older revision		Revision as of 08:20, 24 May 2024
Line 50:		Line 50:
	Where:		Where:

−	: <math>\varepsilon_0</math> is the [[Permittivity of Free Space\|permittivity of free space]]	+	: <math>\varepsilon_0</math>is the [[Permittivity of Free Space\|permittivity of free space]]

← Older revision		Revision as of 08:20, 24 May 2024
Line 50:		Line 50:
	Where:		Where:

−	<math>\varepsilon_0</math> is the [[Permittivity of Free Space\|permittivity of free space]]	+	: <math>\varepsilon_0</math> is the [[Permittivity of Free Space\|permittivity of free space]]