Module 3 Chpter 1 Electron Theory Quiz

Module 3 Electrical Fundamentals

Question 1. A neutron has?

the opposite charge to an Electron but half the weight of a proton.

the same charge as an Electron but half the mass.

no electrical charge but will add weight to the nucleus. >

Question 2. The unit which consists of two or more different types of atoms is known as a.

particle of an element.

molecule of a compound.

molecule of a compound.

Question 3. In what equipment is a photon radiated when an electron leaves a hole?.

Photo-cell.

LED.

Photo diode.

Question 4. A good electrical insulating material will contain.

Only a small number of electrons in the outer shell of each atom of the material.

strongly bound electrons in the atoms of the material.

Weakly bound ‘free’ electrons in the atoms of the material.

Question 5. The smallest particle that a substance can be split and show the same properties as the whole is known as.

an Element.

a Molecule.

an Atom.

Question 6. What charge does the nucleus of an atom possess?.

Positive.

Neutral.

Negative.

Question 7. What is the maximum number of electrons in shell N of an atom?.

18.

32.

16.

Question 8. An oxygen molecule is made up of.

two oxygen atoms sharing neutrons.

two oxygen atoms sharing protons.

two oxygen atoms sharing electrons.

Question 9. If electrons are added to an atom it becomes.

a neutral ion.

a positive ion.

a negative ion.

Question 10. An element whose atoms have fewer than 4 electrons in their valency shell are.

semiconductors.

good insulators.

good conductors.