ATTENTION:
Kindly note that you will be presented with 50 questions randomized from the NOUN question bank. Make sure to take the quiz multiple times so you can get familiar with the questions and answers, as new questions are randomized in each attempt.
Good luck!
PHY102
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1. The variation of the compass from the north-south direction is called the ---------------------------
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2. For capacitors in parallel, the potential difference across each capacitor is ---------------------------
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3. <p style="text-align:left">Six equal point charges Q = 10nC are located at 2,3, 4,5,6,7m. Find the potential at origin.
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4. 1 volt is equal to ________
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5. The magnetic North is found by suspending a bar magnet freely on the --------------------------- axis.
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6. When a dielectric material is inserted between the plates of a capacitor it increases its ---------------------------
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7. The electric potential difference between two points A and B is 42 V. What is the work done by an external agent in carrying a charge of 5.0$times 10^{-5}$ C from A to B at constant speed?
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8. The surface integral of the electric field E over a surface is defined to be electric ---------------------------
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9. A charge distribution in which the charge density at any point depends only on the distance of the point from a central point and not on the direction is said to be spherically ---------------------------
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10. Gauss's law applies to any hypothetical closed surface called --------------------------- surface.
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11. An RLC circiut contains an ac voltage source with rms value of 50V and has a frequency of 600Hz. Suppose that a resistance R = 20 $Omega$, capacitance C = 10.0 $mu$F and an inductance L = 4.0mH are connected in series to the source. Find the current in the circuit and the voltmeter reading across the inductor.
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12. The study of static charges is called ---------------------------
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13. The work done in taking a unit positive charge from one point to another in electric field is --------------------------- of the path chosen between the two points.
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14. When a copper surface is illuminated by radiation of wavelength 2537 angstrome units the value of the stopping potential is found to be 0.24volts. Calculate the work function of copper.
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15. The resistivity of a semiconductor decreases rapidly with increasing ---------------------------.
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16. In the circuit shown, each of the cells has an emf of 2V and internal resistance of $0.1Omega$. Find the current in through the $0.5Omega$
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17. According to Faraday's law, the magnitude of the induced e.m.f is proportional to the rate of change of --------------------------- linking the circuit.
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18. A magnetic field does not exert a force on a _________
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19. A huge spark due to electric discharge in the atmosphere produces all of the following except ______
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20. Neutral objects constitute of equal ---------------------------
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21. A negative charge ---------------------------negative charge
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22. A positive ion passes through an electric and magnetic fields which are mutually perpendicular. The electric field strength is 20.0kV/m while the magnetic flux density is 0.40T. At what speed will the ion pass through undeflected?
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23. An electron enters a uniform magnetic field 0.20 T at an angle of $30^{o}$ the field. Determine the pitch of the helical path assuming its speed is $3times10^{7}$ m/s
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24. Kirchhof's junction rule is statement of conservation of -----------
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25. A conductor 2cm long carrying a current of 8A lies at right angles to a magnetic field of which the flux density is 1.0T. Calculate the force exerted on the conductor
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26. The --------------------------- is the SI Unit of electric charge
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27. In the cathode ray oscilloscope, when fast moving electrons strike the glass screen coated with zinc and sulphide they cause ---------------------------.
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28. From Gauss’ law which of the following is NOT correct?
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29. For capacitors in parallel, the potential difference across each capacitor is ---------------------------
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30. The --------------------------- number is the total number of neutrons and protons.
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31. The magnetic flux through each loop of a 35-loop coil is given by $(3.6t-0.71t^{3})times10^{-2}Tm^{2}$, where the time is in seconds. Determine the induced emf at t=5.0s.
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32. A region where an electric charge experiences a force is ---------------------------field
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33. When a charge density depends only on the perpendicular distance from a plane, the charge distribution is said to have--------------------------- symmetry.
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34. The potential difference between two points B and A is equal to the --------------------------- in taking a unit positive charge from A to B.
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35. What are the dimensions of the constant k in Coulomb’s law of electrostatics?
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36. Two identical balls balls P and Q, each of mass 0.20 g, carry identical charges and are suspended by two threads of equal length. The balls position themselves at equilibrium such that the angle between the threads is 60_{o}.If the distance between the the balls is 0.5m, find the charge on each of them. Take g = 9.8 m/s^{2}
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37. For how long must a steady current of 2A flow through a copper voltameter to deposit $10^{-3}$kg of copper? Z for coper is 0.000329g/C
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38. Calculate the electric field at distance of 320 cm from an infinitely long wire carrying a charge per unit length 8.3 C/m.
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39. At the _______ a dipping compass needle is horizontal and at the magnetic poles it is vertical.
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40. Electric charge between two bodies can be produced by ---------------------------
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41. Field lines are drawn such that the lines per unit cross-section area is proportional to ---------------------------field.
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42. The force between electric charges is known as ---------------------------
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43. An electric field of 50 kV/m is perpendicular to a magnetic field 0.25 T. What is the velocity of a charge whose initial of motion is perpendicular to both fields and which passes through the fields undeflected?
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44. When beta decay occurs --------------------------- changes into a proton and electron.
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45. Three point charges $$2mu{C$}, ${-}4mu{C}$$, and $$6mu{C}$$ are held at the corners of an equilateral triangle with sides equal to 3 cm.What is the resultant force in newtons on the $$2mu{C}$$ charge?
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46. The direction of the electric field is opposite to that of the force if the charge is ---------------------------
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47. The half-life of a certain radioactive isotope is 32 hours. What fraction of the sample would remain after 16 hours?
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48. A body that absorbs all radiations falling on it is known as ---------------------------.
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49. The minimum energy required to liberate an electron from a metal surface is called ---------------------------.
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50. The force applied to a conductor is 10N if the charge in the conductor is 5C, what is the electric field intensity?
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