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Current Affairs January 2024

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4

Which of the following statements about electric potential energy is true?

A. It is a scalar quantity.

B. It depends on the charge of the object and the distance from another charge.

C. It is always negative.

D. It is measured in amperes.

Correct Answer :

B. It depends on the charge of the object and the distance from another charge.


Related Questions

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What is the process by which a material becomes electrically charged when brought in contact with a charged object?

A. Conduction

B. Induction

C. Charging by friction

D. Polarization

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4

Which of the following statements about circular motion is true?

A. The centripetal force acts outward from the center of the circle.

B. Angular velocity is constant in circular motion.

C. The velocity of an object in circular motion is constant.

D. Acceleration is directed towards the center of the circle.

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4

What is the SI unit of heat energy?

A. Calorie

B. Joule

C. Newton-meter

D. Watt

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4

What is the phenomenon where light is separated into its component colors due to refraction and reflection within a material?

A. Dispersion

B. Polarization

C. Diffraction

D. Interference

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4

What is the SI unit of electric potential?

A. Volt

B. Ampere

C. Ohm

D. Watt

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4

What is the SI unit of magnetic susceptibility?

A. No unit (dimensionless)

B. Tesla per meter

C. Ampere per meter

D. Weber

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4

What is the SI unit of electric potential energy?

A. Volt

B. Joule

C. Watt

D. Ohm

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4

Which law states that the total energy in an isolated system remains constant?

A. Law of Conservation of Energy

B. Law of Conservation of Momentum

C. Law of Conservation of Mass

D. Law of Universal Gravitation

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4

Which type of nuclear decay releases a beta particle?

A. Alpha decay

B. Beta decay

C. Gamma decay

D. Electron capture

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4

Which type of particle is negatively charged and orbits the nucleus of an atom?

A. Electron

B. Proton

C. Neutron

D. Positron

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4

Which of the following statements about electric potential energy is true?

A. It is a scalar quantity.

B. It depends on the charge of the object and the distance from another charge.

C. It is always negative.

D. It is measured in amperes.

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4

What is the phenomenon where a charged object induces a charge separation in a neutral object when brought close to it?

A. Conduction

B. Induction

C. Charging by friction

D. Polarization

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4

Which law states that the pressure of a gas is directly proportional to its absolute temperature at constant volume?

A. Boyle's Law

B. Charles's Law

C. Gay-Lussac's Law

D. Avogadro's Law

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4

What is the process by which an unstable atomic nucleus loses energy by emitting radiation called?

A. Radioactive decay

B. Nuclear fission

C. Nuclear fusion

D. Electron capture

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4

What is the process by which a gas changes into a liquid?

A. Vaporization

B. Condensation

C. Sublimation

D. Fusion

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4

Which law states that the electromotive force (emf) in a closed circuit is equal to the rate of change of magnetic flux through the circuit?

A. Faraday's Law of Electromagnetic Induction

B. Lenz's Law

C. Ohm's Law

D. Ampere's Law

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4

Which law states that the total entropy of an isolated system can never decrease over time?

A. First Law of Thermodynamics

B. Second Law of Thermodynamics

C. Third Law of Thermodynamics

D. Law of Conservation of Mass

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4

What is the SI unit of magnetic flux?

A. Weber

B. Tesla

C. Henry

D. Gauss

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4

What is the SI unit of frequency?

A. Hertz

B. Newton

C. Pascal

D. Watt

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4

Which of the following statements about electric fields is true?

A. Electric fields always point towards positive charges.

B. Electric fields are vectors and have both magnitude and direction.

C. Electric fields only exist inside conductors.

D. Electric fields do not interact with magnetic fields.

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4

What is the process by which a solid changes directly into a gas without passing through the liquid phase?

A. Evaporation

B. Sublimation

C. Condensation

D. Melting

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4

Which of the following statements about nuclear reactors is true?

A. They use nuclear fusion to generate electricity.

B. They control nuclear fission reactions to produce heat.

C. They primarily use coal as a fuel source.

D. They do not involve the release of radiation.

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4

What is the SI unit of electric charge in the CGS system?

A. Statcoulomb

B. Coulomb

C. Ampere-hour

D. Franklin

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4

Which type of lens is thinner in the center and thicker at the edges?

A. Convex lens

B. Concave lens

C. Plano-convex lens

D. Plano-concave lens

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4

What is the process of a solid changing directly into a gas called?

A. Evaporation

B. Sublimation

C. Condensation

D. Melting

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4

What is the SI unit of magnetic flux density?

A. Tesla

B. Weber

C. Henry

D. Gauss

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4

What is the phenomenon where a wave changes direction as it passes through a medium with a different density?

A. Reflection

B. Diffraction

C. Refraction

D. Interference

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4

What is the process by which a material becomes magnetized when placed in a magnetic field?

A. Induction

B. Magnetization

C. Polarization

D. Ferromagnetism

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4

Which of the following is an example of a simple machine?

A. Lever

B. Inclined plane

C. Pulley

D. All of the above

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4

Which law states that for every action, there is an equal and opposite reaction?

A. Newton's First Law of Motion

B. Newton's Second Law of Motion

C. Newton's Third Law of Motion

D. Law of Universal Gravitation