JEE Physics - MCQ Practice Questions

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: