Welcome to Edugrown – Your Learning Partner
🛒
Previous Year Questions

PYQ Bank & Paper Generator

Board, class, subject, chapter, year-wise PYQ. Practice effectively and ace your board exams.

1,589 Questions
CBSE
#1 Class Class 12 Physics Electric Charge and Field 2017 Short 3M
An electric dipole is placed in a uniform electric field <b>E</b> with its dipole moment <b>p</b> parallel to the field. Find:<br><br>

(1) The work done in turning the dipole till its dipole moment points in the direction opposite to <b>E</b>.<br><br>

(2) The orientation of the dipole for which the torque acting on it becomes maximum.
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#2 Class Class 12 Physics Electric Charge and Field 2010 Short 2M
What is the nature of electrostatic force between two point electric charges q₁ and q₂ if (a) q₁ + q₂ &gt; 0 (b) q₁ × q₂ &lt; 0 ?
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#3 Class Class 12 Physics Electric Charge and Field 2024 Short 2M
Two equal balls having equal positive charge q coulombs are suspended by two insulating strings of equal length. What would be the effect on the force when a plastic sheet is inserted between the two?
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#4 Class Class 12 Physics Electric Charge and Field 2010 Short 2M
Compare the electric fields due to a monopole (single charge) and dipole.
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#5 Class Class 12 Physics Electric Charge and Field 2024 Short 2M
Why do the electric field lines never cross each other?
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#6 Class Class 12 Physics Electric Charge and Field 2024 Short 2M
Why do the electrostatic field lines not form closed loops?
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#7 Class Class 12 Physics Electric Charge and Field 2024 Short 2M
Figure shows the field lines of a positive charge. Is the work done by the field in moving a small positive charge from Q to P positive or negative? Give reason.
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#8 Class Class 12 Physics Electric Charge and Field 2024 Short 3M
A thin straight infinitely long conducting wire having charge density λ is enclosed by a cylindrical surface of radius r and length l, its axis coinciding with the length of the wire. Find the expression for the electric flux through the surface of the cylinder.
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#9 Class Class 12 Physics Electric Charge and Field 2024 Short 2M
What is the electric flux through a cube of side 1 cm which encloses an electric dipole?
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#10 Class Class 12 Physics Electric Charge and Field 2024 Short 2M
Define electric dipole moment. Is it a scalar or a vector quantity? What is its SI unit?
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#11 Class Class 12 Physics Electric Charge and Field 2024 Short 2M
What is electrostatic shielding? Give one of its practical applications.
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#12 Class Class 12 Physics Electric Charge and Field 2024 Short 2M
Why should electrostatic field be zero inside a conductor?
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#13 Class Class 12 Physics Electric Charge and Field 2024 Short 2M
Why must electrostatic field at the surface of a charged conductor be perpendicular to every point on it?
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#14 Class Class 12 Physics Electric Charge and Field 2024 Long 1M
<b>Assertion (A):</b> Work done in moving a charge around a closed path in an electric field is always zero.<br><br><b>Reason (R):</b> Electrostatic force is a conservative force.
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#15 Class Class 12 Physics Electric Charge and Field 2024 Mcq 1M
The S.I. unit of electric field E is:
A. N/C
B. V/m
C. Both (a) and (b)
D. C/N
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#16 Class Class 12 Physics Electric Charge and Field 2024 Mcq 1M
Two point charges each equal to 2 mC are 0.5 m apart. If both of them exist inside vacuum, then electrostatic force between them is:
A. 1.44 × 10⁵ N
B. 1.44 × 10⁴ N
C. 1.44 × 10³ N
D. 1.44 × 10² N
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#17 Class Class 12 Physics Electric Charge and Field 2024 Mcq 1M
The electric field at a distance 2 cm from the centre of a hollow spherical conducting shell of radius 4 cm having a charge of 2 × 10⁻³ C on its surface is:
A. Zero
B. 4.5 × 10⁷ N/C
C. 2.25 × 10⁷ N/C
D. 9 × 10⁹ N/C
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#18 Class Class 12 Physics Electric Charge and Field 2024 Mcq 1M
A charge q is placed at the centre of the line joining two equal point charges each equal to +Q. The system of three charges will be in equilibrium, if q is equal to:
A. +Q/2
B. -Q/2
C. +Q/4
D. -Q/4
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#19 Class Class 12 Physics Electric Charge and Field 2024 Mcq 1M
An electric dipole placed in an electric field of intensity 2 × 10⁵ N/C at an angle of 30° experiences a torque equal to 4 N·m. The charge on the dipole of dipole length 2 cm is:
A. 7 µC
B. 8 mC
C. 2 mC
D. 5 mC
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
CBSE
#20 Class Class 12 Physics Electric Charge and Field 2024 Short 2M
A conducting wire connects two charged conducting spheres of radii r₁ and r₂ such that they attain equilibrium with respect to each other. The distance of separation between the two spheres is very large as compared to either of their radii. Find the ratio of the magnitudes of the electric fields at the surfaces of the spheres of radii r₁ and r₂.
👁 View Answer
👍 0 👎 0
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★

🔔 Email Updates Lein

Naya content aate hi email par pata chal jayega. Sirf wahi sections chunein jo chahiye.

🔒 Content copy nahi kar sakte