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- 1. Multiple ChoiceWhen an atom loses a valence electron, it becomes a(n) _____________ ion.positivenegativeneutralpolyatomic
- 2. Multiple ChoicePositive ions form when atoms _________ valence electrons.losegainsharegain or share
- 3. Multiple Choice
How many protons are in this element?79196117Cannot be determined - 4. Multiple ChoiceWhat charge does an atom have if it LOSES an electron?Positive (+)Negative (-)
- 5. Multiple ChoiceIons are:atoms with a positive or negative chargeatoms with no chargeatoms with ONLY a positive chargeatoms with ONLY a negative charge
- 6. Multiple ChoiceWhat charge does an atom have if it GAINS an electrons?Positive (+)Negative (-)
- 7. Multiple ChoiceA positive ion is called acationanion
- 8. Multiple ChoiceA anion will be a ____ ion.negativepositive
- 9. Multiple ChoiceWhat types of charges attract?Positive and PositivePositive and NeutralNegative and NeutralPositive and Negative
- 10. Multiple ChoiceWalking across a carpet is an example of charge being transferred byfriction.induction.contact.static electricity
- 11. Multiple ChoiceElectric charges that are alike _______ each other.AttractRepel
- 12. Multiple ChoiceThe teacher rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?The balloons will repel each other.The balloons will attract each other.The balloons will become positively (+) charged.The balloons will pop.
- 13. Multiple ChoiceWhat charge does an electron have?negative (-)positive (+)neutral or no charge (0)
- 14. Multiple ChoiceIf a substance has a higher number of electrons than protons on its surface, what type of charge does it have?A positive charge.A negative charge.A neutral chargeNo charge at all
- 15. Multiple ChoiceTrue or False, Lighting is a form of static electricity.TrueFalse
- 16. Multiple ChoiceWhat makes a charged balloon stick to the wall?Protons transferred to the balloon when it was rubbed on metal.Extra electrons on the surface of the balloon push away electrons in the wall, leaving a positively charged area.The rubber in the balloon has a magnetic field that pulls on the wood in the wall.Electricity in the balloon creates a magnetic field that attracts the metal in the wall.
- 17. Multiple ChoiceWhat happens when you touch a metal doorknob after rubbing your shoes on the carpet?The doorknob sends a burst of electric current into your bodyMillions of electrons go from your finger into the doorknobThe doorknob sends millions of electrons into your fingerour finger becomes negatively charged
- 18. Multiple Choice
The net force due to different charges around a single charge can be determined using superposition principle. True or False?
True
False
- 19. Multiple Choice
According to Coulomb's Law, The greater the separation distance between two charges the greater the magnitude of the electric force. True or False?
True
False
- 20. Multiple Choice
Coulomb's Law states that the electric force is directly proportional to the product of the two charges and inversely proportional to the distance between them. True or False?
True
False
not enough information
- 21. Multiple Choice
The mass of a single electron is equal to 9.109x10-31C. True or False?
True
False
- 22. Multiple Choice
The separation distance between two charges is equal to r=√(k.(q1q2/Fe)). True of False
True
False
- 23. Multiple Choice
Electric field is directly proportional to the charge and inversely proportional to the magnitude of electric force. True or False?
True
False
- 24. Multiple Choice
The electric field lines for a positive charge is always directed away from the charge. True or False?
True
False
- 25. Multiple Choice
Electric force is also equal to the electric field multiply with a charge. True or False?
True
False
- 26. Multiple Choice
The S.I. unit for electric field is__________?
nC
μC
n/C
N/m
none of the above
- 27. Multiple ChoiceIn the diagram below, P is a point near a negatively charged sphere. Which direction best represents the direction of the electric field at point P?RightLeftUpDown
- 28. Multiple ChoiceWhich quantity and unit are correctly paired?electric field strength and N/Celectricity and Coulombselectrostatic force and electronselectric field strength and E
- 29. Multiple ChoiceA point charge Q is far from all other charges. At a distance of 2 m from Q, the electric field is 20 N/C. What is the force a charge of 5 Coulombs feels?4 N100 N40 N10 N
- 30. Multiple ChoiceWhich of the following statements is false about electric field lineselectric field lines cannot crosselectric field lines point away from positive chargeelectric field lines are always straight lineselectric field lines show how a proton would move in an electric field
- 31. Multiple ChoiceAt which point is the electric field the strongestABCD
- 32. Multiple ChoiceAt which point is the electric field the weakest?A because it is the furthest awayA because the field lines are further apartC because the field lines are further apartC because it is the furthest away
- 33. Multiple ChoiceConsider the electric field lines shown in the diagram below. From the diagram, it is apparent that object A is ____ and object B is ____.+,++,--,+-,-
- 34. Multiple ChoiceConsider the electric field lines drawn at the right for a configuration of two charges. Several locations are labeled on the diagram. Which of these shows the ranking in order of weakest to strongest correctlyA, E, CD, E, CD, B, AA, D, B
- 35. Multiple ChoiceAn electrostatic force of 2 X 102. newtons is exerted on a charge of 4 coulomb at point P in an electric field. The magnitude of the electric field intensity at P is8 X 102 N/C5 N/C2 X 10-2 N/C50 N/C
- 36. Multiple ChoiceIt is observed that Balloon A is charged negatively. Balloon B exerts a repulsive effect upon balloon A. Would the electric field vector created by balloon B be directed towards B or away from B and why?towards because electric field lines point away from negative chargestowards because electric field lines point away from positive chargesaway because electric field lines point away from negative chargesaway because electric field lines point toward positive charges
- 37. Multiple ChoiceQA and QB are two charges creating an electric field. Based on the electric field lines, we can concludeQA and QB are both positiveQA and QB are both negativeQA is positive and QB is negativeQA is negative and QB is positive
- 38. Multiple ChoiceWhich of the following is a true statement about the electric field between the two plates?The field is attractive between the plates and uniform in strengthThe field is repulsive between the plates and uniform in strengthThe field is attractive between the plates and strongest near the positiveThe field is repulsive between the plates and strongest near the positive
- 39. Multiple ChoiceThe electrical force between charges is strongest when the charges areclose togetherfar apartthe electric force is constant everywhere.there is no pattern
- 40. Multiple ChoiceWhat is the magnitude of the electric field intensity at a point where a proton experiences an electrostatic force of magnitude 2.30 x 10-25 newton?1.44 x 10-6 N/C3.68 x 106 N/C1.44 x 1044 N/C3.68 x 10-44 N/C
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