Electricity and Magnetism MCQs
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Which of the following statements is TRUE?
- A. Silicon dioxide is a good
- B. The current carriers in conductors are valence electrons
- C. For conductors, the valence electron are strongly attracted to the nucleus
- D. The valence electrons are located in the nucleus of an atom
- Correct Answer: Option B
The energy stored in an electrostatic field or electromagnetic field is called
- A. Electromagnetic energy
- B. Kinetic energy
- C. Potential energy
- D. Rest energy
- Correct Answer: Option C
What principle states that each electron in an atom must have a different set of quantum numbers?
- A. Inclusion principle
- B. Exclusion principle
- C. Quantum principle
- D. Electron principle
- Correct Answer: Option B
Gases whose particles are charged are known as
- A. Conductors
- B. Insulators
- C. Gaseous Conductors
- D. Plasma
- Correct Answer: Option D
Electron is a Greek word for
- A. amber
- B. Fire
- C. Stone
- D. Heat
- Correct Answer: Option A
The evaporation of electrons from a heated surface is called
- A. Radiation
- B. Convection
- C. Thermionic emission
- D. Conduction
- Correct Answer: Option C
Cobalt is an example of a _______ material.
- A. Paramagnetic
- B. Diamagnetic
- C. Ferromagnetic
- D. Non- magnetic
- Correct Answer: Option C
Hydrogen is an example of a ________ material.
- A. Paramagnetic
- B. Diamagnetic
- C. Ferromagnetic
- D. Non- magnetic
- Correct Answer: Option B
Hysteresis refers to the _______________ between flux density of the material and the magnetizing force applied.
- A. Leading effect
- B. Ratio
- C. Equality
- D. Lagging effect
- Correct Answer: Option D
An atom or a group of atoms that carries a net electric charge.
- A. Positive ion
- B. Negative ion
- C. Ion
- D. Electron
- Correct Answer: Option C