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
1 / 50
1. What are the dimensions of the constant k in Coulomb’s law of electrostatics?
2 / 50
2. Find the current in through the $0.3Omega$ in the circuit shown
3 / 50
3. Find the force on a charge 2C in a field 1Vm<sup>-1</sup>---------------------------
4 / 50
4. 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?
5 / 50
5. A negative charge ---------------------------negative charge
6 / 50
6. 1eV is the energy acquired by an electron in falling freely through --------------------------- 1volt.
7 / 50
7. An alpha particle is a --------------------------- nucleus consisting of 2 protons and 2 neutrons.
8 / 50
8. 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?
9 / 50
9. Which of the following is not true about the electric field intensity $vec{E}$ of a uniformly charged solid sphere?
10 / 50
10. Kirchhof's loop rule is statement of conservation of __________
11 / 50
11. Potential difference is the work done in moving a unit charge ____ from one point to another in an electric field.
12 / 50
12. 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.
13 / 50
13. In the space surrounding a wire carrying a steady current, there exists ________
14 / 50
14. 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?
15 / 50
15. The magnetic North is found by suspending a bar magnet freely on the --------------------------- axis.
16 / 50
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?
17 / 50
17. The force that is responsible for holding electrons to nuclei to form atoms is called the --------------------------- force
18 / 50
18. A region where an electric charge experiences a force is ---------------------------field
19 / 50
19. 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?
20 / 50
20. The principle that electric forces add vectorially is known as the principle of ---------------------------
21 / 50
21. 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?
22 / 50
22. The surface integral of the electric field E over a surface is defined to be electric ---------------------------
23 / 50
23. The resistivity of a semiconductor decreases rapidly with increasing ---------------------------.
24 / 50
24. For capacitors in parallel, the potential difference across each capacitor is ---------------------------
25 / 50
25. The --------------------------- number is the total number of neutrons and protons.
26 / 50
26. When a dielectric material is inserted between the plates of a capacitor it increases its ---------------------------
27 / 50
27. Which of the following is a conductor
28 / 50
28. The force applied to a conductor is 10N if the charge in the conductor is 5C, what is the electric field intensity?
29 / 50
29. The force between electric charges is known as ---------------------------
30 / 50
30. 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.
31 / 50
31. In the cathode ray oscilloscope, when fast moving electrons strike the glass screen coated with zinc and sulphide they cause ---------------------------.
32 / 50
32. According to Faraday's law, the magnitude of the induced e.m.f is proportional to the rate of change of --------------------------- linking the circuit.
33 / 50
33. 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.
34 / 50
34. For capacitors in parallel, the potential difference across each capacitor is ---------------------------
35 / 50
35. Which of the following is not true of an electrostatic force?
36 / 50
36. 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
37 / 50
37. 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?
38 / 50
38. A huge spark due to electric discharge in the atmosphere produces all of the following except ______
39 / 50
39. The minimum energy required to liberate an electron from a metal surface is called ---------------------------.
40 / 50
40. 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.
41 / 50
41. Neutral objects constitute of equal ---------------------------
42 / 50
42. Electric field is measured in Newton per ---------------------------.
43 / 50
43. 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
44 / 50
44. The term 'lost volts' refers to -----------
45 / 50
45. The variation of the compass from the north-south direction is called the ---------------------------
46 / 50
46. Which of the following can be used to charge a metal rod that si held in your hand? Rub it with ______
47 / 50
47. Whose law is employed in electrostatics ?
48 / 50
48. 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}
49 / 50
49. The work function of a metal is 3.45eV. Calculate th maximum wavelength of a photon that can eject photo-electrons from the metal
50 / 50
50. If the steady current in a wire is coming directly toward you, the magnetic field lines
Restart quiz
Rate this quiz
