JEE Physics - MCQ Practice Questions
Physics is where JEE ranks are usually won or lost, since a single conceptual slip changes the whole answer. Questions here span mechanics, rotational motion, thermodynamics, waves and oscillations, electrostatics, current electricity, magnetism, optics, and modern physics. Numerical problems carry full derivations so you can see which step you skipped, not just which option was right.
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The potential at distance r from a point charge Q is V. If the distance is doubled, the new potential is:
A charged particle enters a uniform electric field perpendicularly. Its path is:
What is the capacitance of an isolated conducting sphere of radius R in vacuum?
The energy stored in a capacitor of capacitance C charged to potential V is:
Two point charges Q and -Q are at distance 2d apart. The potential difference between two points on the perpendicular bisector at distances x and 2x from the midpoint is proportional to:
A conductor of arbitrary shape carries charge Q. Which is constant throughout the conductor?
The electric field just outside a conductor surface is perpendicular to the surface. This is because:
A parallel plate capacitor has plate area A, separation d, and dielectric constant K. Its capacitance is:
Three capacitors of capacitance C each are connected in a combination where two are in parallel and this combination is in series with the third. The equivalent capacitance is:
A point charge is brought from infinity to a point in an electric field. Work done depends on:
A uniformly charged ring of radius R carries total charge Q. What is the electric field at a point on the axis at distance x from the center?
Two identical conducting spheres carry charges +Q and -Q. When brought into contact, the charge on each sphere becomes:
A Gaussian surface encloses a net charge of 5 μC. The electric flux through the surface is:
An electric dipole of moment p is placed in a uniform electric field E at angle θ to the field. The potential energy is:
A non-conducting sphere of radius R is uniformly charged with charge density ρ. What is the electric field at distance r from center (r < R)?
The work done to move a charge q from point A (potential V_A) to point B (potential V_B) is:
A parallel plate capacitor is filled partially with dielectric (dielectric constant K, thickness d/2) and partially with air (thickness d/2). Its capacitance is:
An electron enters a uniform electric field of strength E with initial velocity perpendicular to the field. Its trajectory is:
A conducting plane carries uniform surface charge density σ. The electric field just outside the surface is:
Two capacitors C₁ and C₂ are connected in parallel across voltage V. The ratio of charges stored is: