Q16.The electric field in a region of space is given by, E = E0ˆi + 2E0ˆj where E0 = 100 N C−1 . The flux of this field through a circular surface of radius 0. 02 m parallel to the Y ‐Z plane is nearly (1) 0. 02 N m2 C−1 (2) 0. 005 N m2 C−1 (3) 0. 125 N m2 C−1 (4) 3. 14 N m2 C−1
What This Question Tests
This question tests the understanding of electric flux calculation using the dot product of the electric field and the area vector, with correct determination of the area vector's direction.
Concepts Tested
Formulas Used
Φ = E ⋅ A
A = πr²
📚 NCERT Sections This Tests
1.14 — Consider A Uniform Electric Field E = 3 × 103 Î N/C. (A) What Is The
Physics Class 11 · Chapter 1
1.14 Consider a uniform electric field E = 3 × 103 î N/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?
1.19 — A Point Charge Causes An Electric Flux Of –1.0 × 103 Nm2/C To Pass
Physics Class 11 · Chapter 1
1.19 A point charge causes an electric flux of –1.0 × 103 Nm2/C to pass through a spherical Gaussian surface of 10.0 cm radius centred on the charge. (a) If the radius of the Gaussian surface were doubled, how much flux would pass through the surface? (b) What is the value of the point charge?
1.18 — A Point Charge Of 2.0 Mc Is At The Centre Of A Cubic Gaussian
Physics Class 11 · Chapter 1
1.18 A point charge of 2.0 mC is at the centre of a cubic Gaussian surface 9.0 cm on edge. What is the net electric flux through the surface?
📋 Question Details
- Chapter
- Electrostatics
- Topic
- Electric Flux
- Year
- 2014
- Shift
- 19 Apr Online
- Q Number
- Q16
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 1: Electric Charges and Fields
More from this Chapter
Q43.A charged particle q is placed at the centre O of cube of length L (A B C D E F G H). Another same charge q is placed at a distance L from O. Then the electric flux through ABCD is (1) q/4πϵ0L (2) zero (3) q/2πϵ0L (4) q/3πϵ0L
Q44.If a charge q is placed at the centre of the line joining two equal charges Q such that the system is in equilibrium then the value of q is (1) Q/2 (2) −Q/2 (3) Q/4 (4) −Q/4
Q45.If there are n capacitors in parallel connected to V volt source, then the energy stored is equal to (1) CV (2) 12 nCV2 (3) CV2 (4) 2n1 CV 2
Q46.Capacitance (in F ) of a spherical conductor with radius 1 m is (1) 1.1 × 10−10 (2) 10−6 (3) 9 × 10−9 (4) 10−3