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Physics Part-I

Electric Charges and Fields

Consider a uniform electric field E = 3 10^{3} {i} NC^{-1}. (a

Physics Part-I

Class 12

NCERT

Chapter 1: Electric Charges and Fields

47 questions

Figure shows tracks of three charged particles in a uniform electrostatic field. Give the signs of the three charges. Which particle has the highest charge to mass ratio?

Consider a uniform electric field

E = 3 \times 1 0^{3} \hat{i} N C^{- 1}

. (a) What is the flux of this field through a square of 10 cm on a side whose plane is parallel to the yz plane? (b) What is the flux through the same square if the normal to its plane makes a

6 0^{o}

angle with the x-axis?

Consider a uniform electric field

E = 3 \times 1 0^{3} \hat{i} N C^{- 1}

. What is the net flux of the uniform electric field through a cube of side 20 cm oriented so that its faces are parallel to the coordinate planes?

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Solving time: 3 mins

Consider a uniform electric field $E = 3 \times 1 0^{3} \hat{i} N C^{- 1}$ . (a) What is the flux of this field through a square of 10 cm on a side whose plane is parallel to the yz plane? (b) What is the flux through the same square if the normal to its plane makes a $6 0^{o}$ angle with the x-axis?

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Updated on: Dec 4, 2023

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Physics Part-I (NCERT)

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Henry Discussed

Consider a uniform electric field

E = 3 \times 1 0^{3} \hat{i} N C^{- 1}

. (a) What is the flux of this field through a square of 10 cm on a side whose plane is parallel to the yz plane? (b) What is the flux through the same square if the normal to its plane makes a

6 0^{o}

angle with the x-axis?

11 mins ago

Discuss this question LIVE

11 mins ago

Text solutionVerified

(a)

Electric field intensity, $\overline{E} = 3 \times 1 0^{3}$ N/C

Magnitude of electric field intensity, $∣ E ∣ = 3 \times 1 0^{3}$ N/C

Side of the square, $s = 10 c m = 0.1 m$

Area of the square, $A = s^{2} = 0.01 m^{2}$

The plane of the square is parallel to the y-z plane. Hence, angle between the unit vector normal to the plane and electric field, $θ = 0^{o}$

Flux $(ϕ)$ through the plane is given by the relation,

$ϕ = ∣ \overline{E} ∣ A cos θ$

$= 3 \times 1 0^{3} \times 0.01 \times cos 0^{o}$

$= 30 N m^{2} / C$

(b)

Plane makes an angle of $6 0^{o}$ with the x-axis. Hence, $θ = 6 0^{o}$

Flux, $ϕ = ∣ \overline{E} ∣ A cos θ$

$= 3 \times 1 0^{3} \times 0.01 \times cos 6 0^{o}$

$= 30 \times \frac{1}{2} = 15 N m^{2} / C$

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Practice more questions from Physics Part-I (NCERT)

Figure shows tracks of three charged particles in a uniform electrostatic field. Give the signs of the three charges. Which particle has the highest charge to mass ratio?

Consider a uniform electric field

E = 3 \times 1 0^{3} \hat{i} N C^{- 1}

. (a) What is the flux of this field through a square of 10 cm on a side whose plane is parallel to the yz plane? (b) What is the flux through the same square if the normal to its plane makes a

6 0^{o}

angle with the x-axis?

Consider a uniform electric field

E = 3 \times 1 0^{3} \hat{i} N C^{- 1}

. What is the net flux of the uniform electric field through a cube of side 20 cm oriented so that its faces are parallel to the coordinate planes?

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Question Text	Consider a uniform electric field $E = 3 \times 1 0^{3} \hat{i} N C^{- 1}$ . (a) What is the flux of this field through a square of 10 cm on a side whose plane is parallel to the yz plane? (b) What is the flux through the same square if the normal to its plane makes a $6 0^{o}$ angle with the x-axis?
Updated On	Dec 4, 2023
Topic	Electric Charges and Fields
Subject	Physics
Class	Class 12
Answer Type	Text solution:1 Video solution: 11
Upvotes	1202
Avg. Video Duration	5 min

Text solutionVerified

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