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. A huge spark due to electric discharge in the atmosphere produces all of the following except ______
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2. Which of the following is not true of an electrostatic force?
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3. An ammeter is suspected of giving inaccurate readings. In order to confirm the readings, the ammeter is connected to a silver votltameter in series and a steady current is passed for one hour. The ammeter reads 0.56A and 2.0124g of silver is deposited. What is the error is the ammeter reading?
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4. 1eV is the energy acquired by an electron in falling freely through --------------------------- 1volt.
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5. 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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6. 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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7. A magnetic field does not exert a force on a _________
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8. Which of the following is a conductor
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9. A single turn coil of cross-sectional area $7.2cm^2$ is in the a magnetic field of flux desity 0.45T. The field which is perpendicular to the coil, is steadily reduced to 0.0T in 5s. Calculate the induced emf.
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10. Charges of ${+}2$ C and ${-2}$ C are situated at points P and Q respectively which are at a distance apart. A point X is mid-way between P and Q. Which of the following correctly describes the electric field and the electric potential at point X?
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11. A galvanometer of resistance $120Omega$ a full scale deflection with a current of 0.0005A. How would you convert it to an ammeter that reads a maximum current of 5A?
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12. Electric charge between two bodies can be produced by ---------------------------
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13. A region where an electric charge experiences a force is ---------------------------field
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14. From Gauss’ law which of the following is NOT correct?
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15. 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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16. Gauss's law applies to any hypothetical closed surface called --------------------------- surface.
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17. A spectral line is emitted when an atom undergoes transition between two levels with a difference in energy of 2.4eV. What is the wavelength of the line?
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18. Kirchhof's loop rule is statement of conservation of __________
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19. For capacitors in parallel, the potential difference across each capacitor is ---------------------------
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20. Kirchhof's junction rule is statement of conservation of -----------
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21. For capacitors connected in series each has the same ____________.
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22. 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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23. Find the force on a charge 2C in a field 1Vm<sup>-1</sup>---------------------------
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24. 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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25. A proton is accelerated through a potential difference of 100V and the enters a region in which it is moving perpendicular to a magnetic field of flux density 0.20 T. Find the radius of the circular path in which it will travel.
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26. If the steady current in a wire is coming directly toward you, the magnetic field lines
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27. An alpha particle is a --------------------------- nucleus consisting of 2 protons and 2 neutrons.
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28. The resistivity of a semiconductor decreases rapidly with increasing ---------------------------.
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29. An RLC circuit is used to tune a radio set to receive NOUN RADIO broadcasting at 105.9MHz in the FM band. The resistance and the inductance of the circuit of the radio set are $12Omega$ and 1.4$mu$H respectively. What capacitance should the circuit have?
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30. When beta decay occurs --------------------------- changes into a proton and electron.
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31. The study of static charges is called ---------------------------
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32. The force between electric charges is known as ---------------------------
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33. The surface integral of the electric field E over a surface is defined to be electric ---------------------------
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34. Find the current in through the $0.3Omega$ in the circuit shown
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35. In the space surrounding a wire carrying a steady current, there exists ________
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36. The magnitude of the forces between charged spheres was first investigated by Charles ---------------------------
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37. In the method of charging by friction, The algebraic sum of the individual charges that is the net charge is ---------------------------.
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38. What is the self - inductance of an air-core solenoid, 1m long and 0.05m in diameter, if it has 1400 turns?
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39. An ac circuit consists of a voltage source $v = 200sin120pi{t}$ and a $6mu$F capacitor in series. Calculate the current established in the circuit
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40. 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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41. The --------------------------- is the SI Unit of electric charge
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42. The principle that electric forces add vectorially is known as the principle of ---------------------------
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43. What are the dimensions of the constant k in Coulomb’s law of electrostatics?
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44. 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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45. Property of magnetic material in which --------------------------- attracts or repels.
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46. 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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47. Which of the following is not true about the electric field intensity $vec{E}$ of a uniformly charged solid sphere?
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48. A series circuit consisting of an uncharged $42mu$F capacitor and $10 MOmegaega$ resistor is connected to 100V power source. What are the current in the circuit and the charge on the capacitor after one time constant?
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49. When an atom is in the ground state it is said to be ---------------------------
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50. For capacitors in parallel, the potential difference across each capacitor is ---------------------------
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