Isabela State University
Cauayan Campus
QUIZ # 6 IN SED SCI 313
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FILL IN THE BLANKS. Identify the correct word/s that will complete the following statements.
1.The three particles that compose an atom are the Proton, Neutron, and Electron.
2.The nucleus of an atom contains the Positively charged Proton and the uncharged Neutrons.
3.The nucleus of an atom has a net Positively charge.
4.The particles that spin about the nucleus are called Electrons. These particles have a net Negatively
charge.
5.A neutral atom contains equal number of Protons and Electrons.
6.A neutral body becomes Positively when electrons are removed from it and becomes Negatively
charged when electrons are added to it.
7.A material that allows free movement of electric charges is called a Conductor
8.A material that doe not allow free movement of charges is called Insulators.
9.A material that has many free electrons called a conductor.
10. A good conductor has very a very small current while a good insulator has a very high
resistance.
11. The region around a moving charge (or a current-carrying conductor) is a electric field.
12. A magnetic field exerts a force on a charge only if the charge is positive
13. The magnetic force on a charge moving in a magnetic field is maximum when the velocity of the
charge is at an angle, 0, with respect to the magnetic field.
14. Right hand rule used in determining the direction of a moving charge in a magnetic field.
15. If the magnetic force on a moving positive charge is directed upward when it enters a magnetic field,
B, then the force on a negative charge moving in the same direction is directed opposite.
16. The magnetic force on a current-carrying conductor is zero when the magnetic field is direct to the
current.
17. The path traced by a charge is a positive when it moves inside a uniform magnetic field and negative
when it moves inside a non- uniform magnetic field.
18. The arrangement of the electric and magnetic fields such that the magnetic force on a moving charge
is cancelled by the electrostatic force on it is called the Electromagnetism.
19. The magnetic properties of different materials is attributed primarily on the magnetic moments of
their atoms' orbiting electrons
20. Ferromagnetic Substances are those that are strongly attracted to magnets and can be magnetized.
21. Paramagnetic Substances are those that are slightly attracted to magnets and move from weaker to
stronger parts of the magnetic field.
22. Diamagnetic Substances are those that are slightly attracted to magnets and move from stronger to
weaker parts of the magnetic fields.
23. The north-seeking pole of the corresponds to the _magnetic pole_ of the earth.
24. The south-seeking pole of the magnet corresponds to the geographic North Pole of the earth.
25. Cutting a magnet into two or smaller pieces will not produced an isolated magnetic flux_ or 8flux
source_.
26. Magnetic poles always come in pairs of north and south.
27. In the right hand grip rule, the thumd represents the direction of __Current in a wire_________.
28. If two long parallel wires 1 m apart carry the same current and the force per unit length of each wire is
2 x 10-7 N/m , then the current through each wire is defined as Ampere
29. The magnetic field at a point due to a straight current-carrying wire is 180 to the current through the ⁰
wire.
30. The magnetic field at a point due to a straight current-carrying wire is directly proportional to the
distance from the point to the wire.
Goodluck and God Bless!
Prepared by:
LORELEI C. TABAGO
