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

Physics ECAT Pre Engineering Chapter 14 Electromagnetism Online Test

Sr. #	Questions	Answers Choice
1	When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be	changed zero unchanged none of these
2	In the expression of force experienced by electron, the direction of both v and B are	parallel zero perpendicular none of them
3	If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are	n/AL Al/n nAL nA/L
4	Lorentz force is defined as	q(E + V x B) q(E x B + V) q(E x V + B) q(E x B)
5	The force experienced by charged particle is maximum, if it moves	parallel to magnetic field perpendicular to magnetic field opposite to the magnetic field none of these
6	41 The force experience, when proton projected in a magnetic field with velocity 'v' is	+e(v x B) -C(V x B) +e<sup>2</sup>(v x B) -e(v<sup>2</sup>x B)
7	The force experienced by an electron projected in a magnetic field B with a velocity V is given by	F=e(V x B) F= -e(V x B) F= e(B x V) Both a and c
8	The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by	F =q(v/B) F=q<sup>2</sup>(v x B) F=q(v x B) F= vx B
9	When current passes through a solenoid coil, it behaves like a	loop circle bar magnet none of these
10	The strength of magnetic field around the current conductor is	Smaller near the conductor Greater near the conductor Greater at the large distance from the conductor Constant near and away from the conductor
11	The magnetic field outside the solenoid due to current is	strong zero weak uniform
12	Which one of the following relations is correct?	1 Wb-m<sup>2</sup>= Nm<sup>-1</sup>A<sup>-1</sup> 1 tesla = 104 gausses 1 Wb-m<sup>2</sup>= 1 tesla All of the above
13	The magnetic field in the middle of a solenoid due to current is	weak strong and uniform none-uniform zero
14	The SI unit of magnetic permeability is	WB A<sup>-1</sup>m<sup>-1</sup> WB mA<sup>-1</sup> WB Am<sup>-1</sup> None of these
15	Tesla is the unit of	Magnetic induction or flux density Magnetic flux Self inductance None of these

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