# PHY102

## Category:PHY102

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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 magnetic North is found by suspending a bar magnet freely on the --------------------------- axis.

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2. 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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3.  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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4. When beta decay occurs --------------------------- changes into a proton and electron.

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5. For capacitors connected in series each has the same ____________.

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6.  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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7. Field lines are drawn such that the lines per unit cross-section area is proportional to ---------------------------field.

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8. The variation of the compass from the north-south direction is called the ---------------------------

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9. For capacitors in parallel, the potential difference across each capacitor is ---------------------------

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10. At the _______ a dipping compass needle is horizontal and at the magnetic poles it is vertical.

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11. Kirchhof's junction rule is statement of conservation of -----------

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12. When amber is rubbed with fur

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13. Neutral objects constitute of equal ---------------------------

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14. The energy stored in a system of charges is known as electrostatic potential ---------------------------

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15. <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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16.  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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17. 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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18.  A huge spark due to electric discharge in the atmosphere produces all of the following except ______

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19.  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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20. The direction of the electric field is opposite to that of the force if the charge is ---------------------------

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21. For capacitors in parallel, the potential difference across each capacitor is ---------------------------

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22. A body that absorbs all radiations falling on it is known as ---------------------------.

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23.  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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24. Potential difference is the work done in moving a unit charge ____ from one point to another in an electric field.

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25. The force between electric charges is known as ---------------------------

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26.  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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27.  Which of the following is a conductor

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28. A positively charged object repels

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29.  The term 'lost volts' refers to -----------

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30. 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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31. 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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32. When a dielectric material is inserted between the plates of a capacitor it increases its ---------------------------

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33. Gauss's law applies to any hypothetical closed surface called --------------------------- surface.

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34. In the method of charging by friction, The algebraic sum of the individual charges that is the net charge is ---------------------------.

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35.  Kirchhof's loop rule is statement of conservation of __________

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36. The study of static charges is called ---------------------------

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37. Electric charge between two bodies can be produced by ---------------------------

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38. A uniform electric field of 200 N/C is in the x-direction. A point charge of 3mu{C} is released from rest at the origin. What is the kinetic energy of the charge when it is at x = 4 m?

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39. The magnitude and direction of the earth's field varies with position over the --------------------------- surface.

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40. 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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41. Gaussian surface is an imaginary closed ---------------------------

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42. The force that is responsible for holding electrons to nuclei to form atoms is called the --------------------------- force

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43. Electric flux density is a function of ---------------------------

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44.  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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45.  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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46.  What are the dimensions of the constant k in Coulomb’s law of electrostatics?

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47. A voltmeter connected across a 60Hz ac source reads 240V. Write down the expression of the instanteneous voltage as a function of time.

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48. As charge increases, electric flux density ­---------------------------

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49. 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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50. 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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