CH-14 Electromagnetism Leave a Comment / By abdulslambsn@gmail.com / October 6, 2025 Welcome To Your Quiz "CH-14 Electromagnetism" Click on "Start Quiz" To Continue... 1. Who discovered a relation between magnetic and electric field: Lenz Faraday Orested None of above None 2. The force acting on one metre length of the conductor placed at right angle to the magnetic field is called Magnetic field Magnetic induction Force None of the above None 3. Tesla is the unit for measuring: Magnetic intensity Magnetic induction Magnetic force None of the above None 4. When some compass needles are placed on a cardboard along a circle with the center at the wire, they will: Set themselves tangential to the circle Points in the direction of N-S Points in the direction of E-W None of these None 5. Magnetic force acting on unit positive charge moving perpendicular to the magnetic field with a unit velocity is known as: Magnetic induction Magnetic flux Magnetic field density None of these None 6. Magnetic field is a: Scalar quantity Vector quantity Both A and B None of these None 7. A current is passed through a straight conductor, the magnetic field produced around it. The magnetic lines of force are: Straight Circular Parabolic None of these None 8. The magnetic force experienced by a charge particle moving in a magnetic field will be minimum when it moves: Parallel to magnetic field Anti-parallel to magnetic field Perpendicular to magnetic field None of the above None 9. The unit of magnetic induction B is: Coulomb Ampere Coulomb/Ampere Weber/m² None 10. The magnetic field inside the solenoid can be increased by: Increasing number of turns Decreasing the current Increasing current Both A and C None 11. The strength of magnetic field is measured in SI units: Am/N Nm/A N/Am N None 12. If there are n charge carriers per unit volume than the number of charge in a segment of wire of length L and A is: AL/n n A/L n AL n L/A None 13. When the charged particle is projected in the direction parallel to the magnetic field, then force experienced will be: qvB Maximum Zero None of these None 14. When an electron enters at a right angle to the magnetic field, the magnitude of velocity: Remains constant Decreases Increases None of these None 15. If the magnetic flux is expressed in weber, then the magnetic induction can be expressed as: Weber/m Weber/m² Weber/m³ m/Weber None 16. The magnetic field at a point due to current carrying conductor is directly proportional to: Current flows through the conductor Distance from the conductor Resistance of the conductor Thickness of the conductor None 17. If a moving electron deflected side ways on passing through a certain region of space, can we predict the presence of magnetic field: No Yes Maximum None of the above None 18. The total number of magnetic lines of force passing normally through a given area is called: Magnetic flux Flux density Self induction Mutual induction None 19. The magnetic field at the middle of the solenoid is: Uniform and strong Uniform Strong Weak None 20. In particle velocity method, the selected speed is equal to: V = BE V = E/B V = E/F None of the above None 21. Magnetic flux density at a point due to the current carrying conductor determined by: Faraday's law Ampere's law Flemming's law Gauss's law None 22. In case of galvanometer, the magnitude of deflecting torque is given as: BINA cos a BIN cos a NIA cos a None of the above None 23. A moving coil galvanometer can be converted into ammeter by connecting: A low resistance in series A low resistance in parallel A high resistance in series None of these None 24. The device used for displaying the waveform of given voltage is: A.C generator Cathode ray oscilloscope D.C generator Galvanometer None 25. CRO works by deflecting the beam of electron as they pass through: Uniform magnetic field Uniform electric field between two sets of parallel plates Non- uniform magnetic field None of these None 26. The anode in CRO are at: Lower potential w.r.t cathode Higher potential w.r. to cathode Same potential as cathode None of these None 27. The voltage applied across Y- plate deflects the beam: Vertically on the screen Horizentically on the screen Both A and B None of these None 28. In CRO, the output wave form of time base generator is: Circular Square Sinusoidal Saw-toothed None 29. By means of waveform displayed on the screen of CRO, we can measure: Frequency of voltage Voltage Phase of voltage All of the above None 30. What is emitted by the hot metal filament in a cathode ray oscilloscope: Electron X-plates Protons Y-plats None 31. What is the current in a wire of 10 cm long at right angle to a magnetic field of 0.5 T when force acting on the wire is 5 N: I = 10 A I = 50 A I= 500 A I = 100 A None 32. Four accurate measurement of current through a circuit, the resistance of ammeter should be: Very small Very high Neither small nor high None of the above None 33. In CRO when beam of electrons falls on a screen it makes a visible spot because the screen is: Rough Fluorescent Polished Clear None 34. To make the field stronger near the coil of the galvanometer, we place inside the coil a: Soft iron cylinder Soft steel cylinder Soft copper cylinder None of these None 35. Such a galvanometer in which the coil comes to rest quickly after the current passed through it is called: Stable galvanometer Sensitive galvanometer Both A and B None of these None 36. To convert a galvanometer into an ammeter, we connect with it a: Shunt resistance Low value parallel Low value by pass resistor All of the above None 37. The resistance of shunt is: Verge large Very small Both A and B None of these None 38. Which of the following is correct? 1 T = 10³ G 1 T = 10⁴ G 1 T = 10⁻⁴ G None of these None 39. If an electron enters the magnetic field at right angle from left and B is into paper, electron will be deflected: Upward Downward No deflection None of these None 40. A Solenoid 15 cm, long has 300 turns, I= 5A, B= 1.3 x 10⁻² wbm⁻² 1.3 x 10² wb m⁻² 1.3 x 10⁻² G 1.3 x 10⁻² wb None 1 out of 8 Thanks For Taking This Quiz - Please See Your Answers/Results Below After Entering Your Name & Email... Name Email Time's up
