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. <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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2. Electric flux density is a function of ---------------------------
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3. Kirchhof's junction rule is statement of conservation of -----------
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4. An alpha particle is a --------------------------- nucleus consisting of 2 protons and 2 neutrons.
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5. 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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6. 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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7. 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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8. Which of the following is a conductor
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9. A negative charge ---------------------------negative charge
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10. When amber is rubbed with fur
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11. 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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12. Which of the following is not true about the electric field intensity $vec{E}$ of a uniformly charged solid sphere?
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13. 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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14. A body that absorbs all radiations falling on it is known as ---------------------------.
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15. The principle that electric forces add vectorially is known as the principle of ---------------------------
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16. Gaussian surface is an imaginary closed ---------------------------
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17. Property of magnetic material in which --------------------------- attracts or repels.
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18. 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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19. The term 'lost volts' refers to -----------
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20. A region where an electric charge experiences a force is ---------------------------field
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21. In the cathode ray oscilloscope, when fast moving electrons strike the glass screen coated with zinc and sulphide they cause ---------------------------.
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22. 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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23. The --------------------------- is the SI Unit of electric charge
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24. Neutral objects constitute of equal ---------------------------
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25. Kirchhof's loop rule is statement of conservation of __________
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26. 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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27. For capacitors connected in series each has the same ____________.
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28. The direction of the electric field is opposite to that of the force if the charge is ---------------------------
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29. 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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30. Potential difference is the work done in moving a unit charge ____ from one point to another in an electric field.
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31. The minimum energy required to liberate an electron from a metal surface is called ---------------------------.
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32. 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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33. The electric flux is a --------------------------- quantity.
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34. The --------------------------- number is the total number of neutrons and protons.
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35. When an atom is in the ground state it is said to be ---------------------------
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36. 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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37. A huge spark due to electric discharge in the atmosphere produces all of the following except ______
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38. The variation of the compass from the north-south direction is called the ---------------------------
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39. 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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40. Electric charge between two bodies can be produced by ---------------------------
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41. The magnitude and direction of the earth's field varies with position over the --------------------------- surface.
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42. 1eV is the energy acquired by an electron in falling freely through --------------------------- 1volt.
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43. 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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44. What are the dimensions of the constant k in Coulomb’s law of electrostatics?
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45. If the steady current in a wire is coming directly toward you, the magnetic field lines
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46. The magnetic North is found by suspending a bar magnet freely on the --------------------------- axis.
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47. 1 volt is equal to ________
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48. A potentiometer wire of length 100cm has a resistance of 10$Omega$. It is connected in series to to a resistance R and a cell of emf 2V and negligible internal resistance. A source of emf of 10mV is balanced by a length of 40cm of the potentiometer wire. What is the value of the resistance R?
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49. 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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50. 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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