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. For capacitors in parallel, the potential difference across each capacitor is ---------------------------
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2. A body that absorbs all radiations falling on it is known as ---------------------------.
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3. The principle that electric forces add vectorially is known as the principle of ---------------------------
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4. 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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5. Property of magnetic material in which --------------------------- attracts or repels.
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6. 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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7. 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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8. The surface integral of the electric field E over a surface is defined to be electric ---------------------------
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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. What are the dimensions of the constant k in Coulomb’s law of electrostatics?
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11. The --------------------------- number is the total number of neutrons and protons.
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12. The minimum energy required to liberate an electron from a metal surface is called ---------------------------.
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13. A huge spark due to electric discharge in the atmosphere produces all of the following except ______
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14. 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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15. 1 volt is equal to ________
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16. Electric charge between two bodies can be produced by ---------------------------
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17. A tiny ball of mass 0.60 g is suspended from a rigid support with a piece of thread in a horizontal electric field of intensity 700 N/C. The ball is in equilibrium when the thread is inclined at an angle of 20_{o} to the vertical. What are the magnitude and sign of the charge on the ball? Take g = 9.8m/s^{2}
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18. 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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19. A negative charge ---------------------------negative charge
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20. A positively charged object repels
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21. 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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22. The magnetic North is found by suspending a bar magnet freely on the --------------------------- axis.
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23. The variation of the compass from the north-south direction is called the ---------------------------
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24. Gaussian surface is an imaginary closed ---------------------------
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25. 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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26. The following are true about electric field lines except that they ______
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27. At the _______ a dipping compass needle is horizontal and at the magnetic poles it is vertical.
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28. An alpha particle is a --------------------------- nucleus consisting of 2 protons and 2 neutrons.
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29. Which of the following can be used to charge a metal rod that si held in your hand? Rub it with ______
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30. The work function of a metal is 3.45eV. Calculate th maximum wavelength of a photon that can eject photo-electrons from the metal
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31. Field lines are drawn such that the lines per unit cross-section area is proportional to ---------------------------field.
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32. Find the current in through the $0.3Omega$ in the circuit shown
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33. 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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34. Kirchhof's loop rule is statement of conservation of __________
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35. The term 'lost volts' refers to -----------
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36. A region where an electric charge experiences a force is ---------------------------field
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37. 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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38. When beta decay occurs --------------------------- changes into a proton and electron.
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39. The direction of the electric field is opposite to that of the force if the charge is ---------------------------
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40. Two charges $Q_{1} = 500mu{C}$ and $Q_{2} = 100mu{C}$ are located on the XY plane at the positions $r_{1} = 3vec{j} m and r_{2} = 4vec{i}$ m. Find the force exerted on the $Q_{2}$
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41. In the method of charging by friction, The algebraic sum of the individual charges that is the net charge is ---------------------------.
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42. The study of static charges is called ---------------------------
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43. According to ohm's law the potential difference is proportional to the ---------------------------
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44. When a dielectric material is inserted between the plates of a capacitor it increases its ---------------------------
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45. The magnitude and direction of the earth's field varies with position over the --------------------------- surface.
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46. From Gauss’ law which of the following is NOT correct?
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47. 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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48. When amber is rubbed with fur
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49. Neutral objects constitute of equal ---------------------------
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50. 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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