1. Home
  2. Back Today Date :- Wednesday 20th of May 2026 03:47:38 AM

MCAT - Online Exam Test Papers | MCAT - MCQs[multiple choice questions and answers ] | MCAT - Mock Test Papers | MCAT - Practice Papers | MCAT - Sample Test Papers |

Question:
Electromagnetic waves travel in free space with the speed of

1.?-rays

2.Positive rays

3.Cathode rays

4.More than sound waves

Posted Date:-2021-08-27 05:06:24

More MCQS Questions and answers

  1. A 100?F capacitor with 12V source in series having frequency 50Hz will offer a capacitive reactance of about
  2. A capacitor of capacitance 30?F is charged by a constant current of 10mA. If initially the capacitor was uncharged what is the time taken for the potential difference across the capacitor to reach 300V?
  3. A changing magnetic flux produces around itself an induced
  4. A fuse is placed in series with the cireuit to protect against
  5. A neon flashlight cell with an emf of 1.5V gives a current of 15A when connected directly to an ammeter of resistance 0.04?. Internal resistance of the cell is
  6. A pure variable resistor is connected in series with a pure capacitor of fixed capacitance. The impedance of the circuit
  7. A wire of resistance R is coiled inductively so that its inductance is L. The impedance of the coil at a frequency of f is
  8. All electrical appliances are connected in parallel to each other between the main line and neutral wire to get
  9. Ammeter connected in an AC circuit measures
  10. An alternating current is represented by the equation I = I?sin?t which of the following equation represents an alternating current of frequency and amplitude twice that of the above current?
  11. An alternating current of r.m.s value of 4.0 A and frequency 50Hz flows in a circuit containing 10? resistor. The peak current is then
  12. An alternating current or voltage
  13. An electric iron is marked 20 volts 500W. The units consumed by it in using if for 24 hours will be
  14. An electromagnetic wave consists of
  15. An immersion heater of 400 watts kept on for 5 hours will consume electrical power of
  16. Circuit which gives continuously varying potential is called
  17. Electrical energy is converted to heat at the rate of
  18. Electrical energy is measured in
  19. Electromagnetic waves emitted from antenna are
  20. Electromagnetic waves transport
  21. Electromagnetic waves travel in free space with the speed of
  22. If 1 ampere current flows through 2m long conductor the charge flow through it in 1 hour will be
  23. If a glass plate is inserted in between the plate of a capacitor in series with a lighted bulb the brightness of the bulb
  24. If capacitance of L-C circuit is made four times then frequency of the circuit become
  25. In capacitive circuit the current
  26. In liquids and gases the current is due to the motion
  27. In the following figure, the terminal potential is
  28. Internal resistance is the resistance offered by
  29. pure resistor circuit the voltage and current are
  30. Reciprocal of resistivity is called
  31. Resistance between points A and B in the circuit shown in figure is
  32. Resistance of a super conductor is
  33. Resistance of a wire on increasing its temperature will
  34. Resistance of an ideal insulator is
  35. Specific resistance of a wire
  36. Terminal potential difference of a battery is greater than its emf when
  37. The current in the circuit shown in figure - What will be the current in the circuit?
  38. The direction of propagation of an electromagnetic waves is
  39. The graphical representation of Ohms law is
  40. The resistance of a conductor at absolute zero (OK) is
  41. The value of the steady current which when flowing through the same resistor produces heat at the same rate as the mean rate of heat produced by the alternating current is
  42. There are three bulbs of 60W 100W and 200W which bulb has thickest filament
  43. Three bulbs are rating 40W 60W and 100W designed to work on 220V mains. Which bulb will burn most brightly if they are connected in series across 220 V mains?
  44. To find the r.m.s value of an alternating current mathematically we need to have
  45. Waves emitted from the antenna are
  46. When 2? 4? and 6? resistor are connected in parallel their resultant equivalent resistance will be
  47. Which one is the best material for making connecting wires?
  48. Which one of the following bulbs has the least resistance?
  49. Which one of the following materials is useful for making bulb filaments?
  50. Why should a resistance be introduced in a circuit in series deliberately?
Search