JEE Mains Kinematics and Electric Fields

Questions and Answers

[M^0L^1T^{-1}]

Towards east

12 m/s

<p>Along the line joining the point and the center of the dipole</p> Signup and view all the answers

<p>2 m/s²</p> Signup and view all the answers

Study Notes

Displacement: Minimum distance between initial and final position of an object, can be positive, negative, or zero.
Distance: Total path length covered by an object, always positive.
Speed: Rate of change of distance, scalar quantity, units: m/s.
Velocity: Rate of change of displacement, vector quantity, units: m/s.
Acceleration: Rate of change of velocity, vector quantity, units: m/s².
Motion in a straight line: Can be uniform or non-uniform, described by equations of motion.
Equations of motion:
- v = u + at
- s = ut + (1/2)at²
- v² = u² + 2as
- where u: initial velocity, v: final velocity, a: acceleration, t: time, s: displacement

Coulomb's Law: Force between two point charges, proportional to product of charges and inversely proportional to square of distance between them.
Electric Field: Force per unit charge, units: N/C.
Electric field lines: Imaginary lines that emerge from positive charge and enter into negative charge, never intersect.
Electric field intensity: Force experienced by a unit positive charge, units: N/C.
Electric flux: Product of electric field intensity and area, units: Nm²/C.
Gauss's Law: Total electric flux linked with a closed surface is proportional to charge enclosed within the surface.
Types of charges: Like charges (repel), unlike charges (attract), neutral (no force).
Conductors and insulators: Conductors allow free movement of charges, insulators do not.