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- 1. Multiple ChoiceIn a neutral atom, the number of electrons is equal to the number of _______.NeutronsOrbitsProtonssubatomic particles
- 2. Multiple ChoiceIf two charges repel each other, the two charges must bePositive and neutraPositive and negativepositive and neutralnegative and negative
- 3. Multiple ChoiceAn object becomes charged when the atoms in the object gain or loseelectronsprotonsneutronsall of the above
- 4. Multiple ChoiceIf you rub a glass rod with a piece of silk, the rod becomes positively charged. This means thatfriction destroyed electrons in the rod.the silk has become negatively charged.protons have moved to the rod.glass attracts more protons.
- 5. Multiple ChoiceIf you bring a charged object near an electrically neutral surface without allowing the object to touch the surface, the charges in the surface are rearranged byfriction.convection.induction.conduction.
- 6. Multiple ChoiceObjects that have opposite chargesare attracted to each other, and the force between the objects pulls them together.are attracted to each other, and the force between the objects pushes them apart.are repelled by each other, and the force between the objects pulls them together.are repelled by each other, and the force between the objects pushes them apart.
- 7. Multiple ChoiceA region around a charged particle that can exert a force on another charged particle is called anelectric pulse.electric charge.electric force.electric field.
- 8. Multiple ChoiceCharging by ____ occurs when electrons are transferred from one object to another by direct contact.reductioninductionconductionfriction
- 9. Multiple ChoiceThe "Q" in Coulomb's Law stands forthe mass of charges objects.the distance of charged objects.the force of charged objects.the charge of charged objects.
- 10. Multiple ChoiceForce between two bodies having charges 5.0 x 102 μC and 1.0 x 102 μC separated by distance of 0.50 m in air is1800 N1.0 x 103 N2200 N3.0 x 102 N
- 11. Multiple ChoiceA positive charge of 4.0 µC exerts an attractive force of 8.0 N on an unknown charge 20.0 cm away. The unknown charge is+ 8.9 µC- 8.9 µC+ 4 µC- 44 µC
- 12. Multiple Choice
When you pull a cotton sweater off your skin, electrons are transferred from the ___________________ (cotton, skin) to the __________________ (cotton, skin). As a result, your body acquires a ___________ (+ , -) charge and the cotton sweater acquires a ___________ (+ , -) charge.skin, cotton, +, -cotton, skin, +, -skin , cotton, -, +cotton, skin, -, + - 13. Multiple ChoiceWhich ranking is correct?A < BJ < H < IF < G < ED < C
- 14. Multiple ChoiceElectric field lines are drawnIn a radial direction, from negative to positive.In a radial direction, from positive to negative.In a tangent direction, from positive to negative.In a tangent direction, from negative to positive.
- 15. Multiple ChoiceWhich part of Coulomb's Law is always squared?distancechargeCoulomb's constantforce
- 16. Multiple ChoiceA glass rod rubbed against your hair gains a charge of -14.0 nC. What is the electric force between the balloon and your hair when the two are separated by a distance of 7.1 cm?3.5 x 104 N-3.5 x 104 N- 3.5 x 10-4 N3.5 x 10-4 N
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