Consider a uniform electric field E = 3 | Class 12 Physics Chapter Electric Charges and Field, Electric Charges and Field NCERT Solutions

Welcome to the NCERT Solutions for Class 12 Physics - Chapter Electric Charges and Field. This page offers a step-by-step solution to the specific question from Exercise 1, Question 15: . With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.

Question 15:

Consider a uniform electric field E = 3 × 103 îN/C.

(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 60° angle with the x-axis?

Answer:

(a) Electric field intensity, = 3 × 103 î N/C

Magnitude of electric field intensity, = 3 × 103 N/C

Side of the square, s = 10 cm = 0.1 m

Area of the square, A = s2 = 0.01 m2

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°

Flux (Φ) through the plane is given by the relation,

Φ =

= 3 × 103 × 0.01 × cos0°

= 30 N m2/C

(b) Plane makes an angle of 60° with the x-axis. Hence, θ = 60°

Flux, Φ =

= 3 × 103 × 0.01 × cos60°

= 15 N m2/C


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Comments

  • vashu tyagi
  • Jul 22, 2020

thanks, now i am out of cofusion that i had with problems similar to this question


  • Md Danish
  • Jun 27, 2019

Right ans thanks


  • rigio taditya
  • Jul 17, 2018

Great answer...thank u and it's easy to understand


  • Neshvin
  • Mar 17, 2018

How it came 60°.since it is a square it should be 90°is it.then the answer is wrong right


  • Anu
  • Mar 02, 2018

Useful!


  • Deeksha
  • Apr 26, 2016

Thank u soo much for this wonderful website!


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Welcome to the NCERT Solutions for Class 12 Physics - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 15: Consider a uniform electric field E = 3 × 103 îN/C. (a) What is the flux of this fiel....