2 Identify the following true statements? A proton is attracted to an electronAn electron is repelled by a neutronA proton is repelled by another protonBoth protons and electrons are free to move around in metals
3 A charged rod is brought near but not touching two neutral conductors A charged rod is brought near but not touching two neutral conductors. Which arrangement describes the charges on the two spheres?
4 Which statements are true about conductors and insulators? Conductors are materials that allow both electrons and protons to freely moveThe electrons on insulators are fixed in placeConductors freely allow electrons to flow while insulators restrict their flow.Insulators have different degrees of holding power
5 The charged conductor below could be charged by which of the processes Negative charge rod through inductionPositive charge rod through inductionNegative rod through conductionPositive charge rod through conduction
6 A neutral conductor is placed on a positively charged insulator The conductor remains uncharged but the charge has been rearrangedThe conductor has a positive chargeThe conductor has a negative charge
7 Which of the following statements are true concerning grounding? Negative charges move to the earth to neutralize a Negatively charged objectNegative charges move from the earth to neutralize a Positivly charged objectAn uncharged object becomes charged by the earthBoth 1 and 2
8 Which statement is true about an electric field? Are lines of forceRepresents the path a positive test charge would moveAre strongest where the lines are closestAll of the above
9 An electron is placed in an electric field shown below, which of the following statements are true? The electron is pulled to the left with increasing forceThe electron is pulled to the right with increasing forceThe electron is pulled to the right with decreasing force-e
10 Two identical charges experience a force F, are moved twice as far, what is the new force?
11 Two identical charges experience a force F, are moved three times as close, the force is now?
12 Three identical bulbs are connected in series which of the following is true? The current is the sameThe voltage is the sameBoth current and voltage is the same
13 Which of the following is true if the resistance for each bulb is different ? The current is the same but the voltage drop will changeThe voltage drop is the same but the current changesBoth current and voltage is the same
14 I1=I2=I3 I3 >I2>I1 I3 <I2<I1 If the resistance of each bulb increases B3 > B2> B1 What can be said about the current in each bulb ?I1=I2=I3I3 >I2>I1I3 <I2<I1
15 V1=V2=V3 V3 >V2>V1 V3 <V2<V1 If the resistance of each bulb increases B3 > B2> B1 What can be said about the Voltage drop in each bulb ?V1=V2=V3V3 >V2>V1V3 <V2<V1
16 Which of the following is a correct expression for the equivalent resistance 1/[1/(R4 + R5 + R6)+1/(R2 + R3)] + R1R1 + 1/(R2+R3) + 1/(R4 + R5 + R6)(R2xR3)/(R4+R5+R6) + R1
17 Ammeter in series and Voltmeter in parallel Which of the following statement describes the best way to hook up and ammeter and voltmeter?Ammeter in series and Voltmeter in parallelAmmeter in series and voltmeter in seriesAmmeter in parallel and voltmeter in series
18 Which of the following demonstrates the proper direction of the magnetic field induced by a current carrying wire?x3.4.
19 Which of following represents the correct magnetic field induced by a current carrying wire? xx3.4.
20 Which electromagnet shows the proper polarization? 1. N S.+ -2.N S3. S N
21 A positive charge ion moves to the right in a magnetic field into the page, what direction is the force acting on it?UpDownLeftRightX X X X X X X X X X X X X
22 What can be done to increase the speed of a motor? Increase the currentIncrease the magnetic fieldIncrease the loops of wireAll of the above
23 The speed of a mechanical wave is dependent on Wave legnthFrequencyPeriodMedium
24 Which of the following is not true about light Light needs a medium to travel inLight slows down in denser substancesLight travels the fastest in a vacuumLight is a electromagnetic wave
25 Which of the following is not true about the refraction of light When n1 < n2 light bends toward the normalWhen n1 > n2 light bends toward the normalWhen n1 > n2 light is refracted at all angles
26 For a given medium as the frequency goes up The wave-length decreasesThe wave-length increasesThe speed increasesThe speed decreases