ECAT Pre General Science Chapter 14 online mcq test with answers for Physics chapter 14 (Electromagnetism)

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ECAT Physics Chapter 14 Important MCQ's

Sr.#	Question	Answer
1	When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is	A. 90° B. 75° C. 0° D. 180°
2	Charge to mass ratio (e/m) of an electron is given by the relation	A. e/m = 2V/Br² B. e/m = 2V/B²r C. e/m = 2V/B²r² D. e/m = V/2B²r²
3	The unit of flux density is also given by	A. Weber/m²or Wb . m^-2 B. Weber/mor Wb . m C. Weber/mor Wb . m^-1 D. Weber or Wb
4	A current carrying conductor sets up its own:	A. Electric field B. Nuclear field C. Magnetic field D. Both (A) and (C)
5	When current passes through a solenoid coil, it behaves like a	A. loop B. circle C. bar magnet D. none of these
6	The SI unit of magnetic flux is.	A. weber B. Nm^-1A^-1 C. tesla D. gauss
7	In the formula B= µ̻ nl, the symbol n denotes:	A. Total number of turns of solenoid B. Number of turns per unit length C. Number of turns per unit volume D. Numbers of turns per unit area
8	Strength of magnetic field is measured in SI units, in:	A. N B. N/Am C. Am/N D. Nm/A
9	The SI unit of magnetic induction is tesla which is equal to	A. Newton/ampere-meter or N/A-m B. Newton/ampere²-meter or N/A²-m C. Newton/ampere²-meter² or N/A²-m² D. Newton/ampere²-meter²or N/A²-m²
10	A galvanometer is an instrument used to	A. measure voltage across a circuit B. detect current in a circuit C. measure current flowing through a circuit D. none of these

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