Related InterviewSolutions

• Pick out the expression for force per unit length between two parallel carrying conductors if the current passing through both of them are the same?(a) \(\frac {\mu_o 2I^2}{4πb}\)(b) \(\frac {\mu_o 2I^3}{4πb}\)(c) \(\frac {\mu_o I^2}{4πb}\)(d) \(\frac {\mu_o 4I^2}{4πb}\)I had been asked this question during a job interview.This interesting question is from Ampere and Forces between Two Parallel Currents topic in portion Moving Charges and Magnetism of Physics – Class 12
• There are two conductors X and Y carrying a current I and moving in the same direction. p and q are two electron beams also moving in the same direction. Will there be attraction or repulsion between the 2 conductors and between the two electron beams separately?(a) The electron beams will repel each other and conductors attract each other(b) The electron beams will attract each other and the conductors also attract each other(c) The electron beams will attract each other and the conductors repel each other(d) The electron beams will repel each other and the conductors also repel each otherThe question was asked by my college director while I was bunking the class.My question comes from Ampere and Forces between Two Parallel Currents topic in division Moving Charges and Magnetism of Physics – Class 12
• A solenoid of 0.5 m length with 100 turns carries a current of 5 A. A coil of 20 turns and of radius 0.02m carries a current of 0.6 A. What is the torque required to hold the coil with its axis at right angle to that of solenoid in the middle point of it?(a) 1.60 N m(b) 15.89 × 10^-5 N m(c) 1.893 × 10^-5 N m(d) 1.893 × 10^-8 N mI had been asked this question during an online exam.Query is from Solenoid and Toroid topic in chapter Moving Charges and Magnetism of Physics – Class 12
• Force on a charge ‘q’ moving with a velocity ‘v’ in a magnetic field is given by F = qvB. State true or false.(a) True(b) FalseThe question was posed to me by my college director while I was bunking the class.My question is from Motion in a Magnetic Field in section Moving Charges and Magnetism of Physics – Class 12
• Which of the following is not a point of similarity between Biot-Savart law and Coulomb’s law.(a) Both fields depend inversely on the square of the distance from the source to the point of observation(b) They are not a universal law(c) The principle of superposition does not apply to both(d) Both are long-range fieldsI have been asked this question in class test.The doubt is from Magnetic Field due to a Current Element & Biot-Savart Law topic in chapter Moving Charges and Magnetism of Physics – Class 12
• In a certain arrangement, a proton does not get deflected while moving through a magnetic field region. Under what condition is it possible?(a) F = 0(b) F = 180 N(c) F = -180 N(d) F = 3600 NThe question was asked in examination.The origin of the question is Motion in a Magnetic Field in portion Moving Charges and Magnetism of Physics – Class 12
• Find the true statement.(a) The force between two parallel current carrying wires is independent of the radii of the wires(b) The force between two parallel current carrying wires is independent of the length of the wires(c) The force between two parallel current carrying wires is independent of the magnitude of currents(d) The force between two parallel current carrying wires is independent of their distance of separationThe question was asked by my college professor while I was bunking the class.Query is from Ampere’s Circuital Law topic in division Moving Charges and Magnetism of Physics – Class 12
• When infinitely long parallel wires carry equal currents in the same direction, the magnetic field at the midpoint in between the two wires is zero.(a) True(b) FalseI had been asked this question in an interview for internship.This question is from Ampere and Forces between Two Parallel Currents in section Moving Charges and Magnetism of Physics – Class 12
• What is the work done by the magnetic field on a moving charged particle?(a) Maximum(b) Minimum(c) Depends on the strength of the magnetic field(d) ZeroI got this question during an online exam.This intriguing question originated from Magnetic Force topic in chapter Moving Charges and Magnetism of Physics – Class 12
• An ideal ammeter has infinite resistance and an ideal voltmeter has zero resistance.(a) True(b) FalseI have been asked this question during an interview.My doubt stems from Moving Coil Galvanometer topic in division Moving Charges and Magnetism of Physics – Class 12