/10 Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 12345678910 Chapter 5 : Magnetism and Matter This Quiz Contains a set of 10 Questions. The Passing Cut-off is 60%. To start the Quiz, click on the Start Button. All the Best! 1 / 10 Why is steel instead of soft iron used to make permanent magnets? Steel loses magnetism quickly Iron resists field Steel is paramagnetic Steel has high coercivity 2 / 10 Why is soft iron used for making electromagnets? It retains magnetism It loses magnetism easily It is a good conductor It has high resistivity 3 / 10 What is the likely cause if a bar magnet’s north pole points toward east? Wrong pole labeling Electrostatic effect Air resistance Local magnetic anomaly 4 / 10 Absence of monopoles implies that field lines: start and end at charges diverge outward form closed loops terminate at poles 5 / 10 In an ideal case, the magnetic field at the center of a bar magnet is: maximum but not infinite infinite zero half of axial value 6 / 10 How is magnetic field strength of Earth related to its components (Horizontal and Vertical)? B = H/V B = HV B = H + V B = √(H² + V²) 7 / 10 Why is the magnetic field inside a solenoid treated as uniform? Field lines are parallel and equally spaced Turns are random It has circular loops Field lines intersect 8 / 10 What happens to B if μᵣ > 1? B = μ₀H B becomes zero B decreases B increases compared to vacuum 9 / 10 What happens when ferromagnetic domains are fully aligned? Magnetisation saturates It vanishes It decreases It oscillates 10 / 10 Magnetisation M is defined as: magnetic field per unit area magnetic moment per unit volume flux per unit area dipole moment × area Your score is 0% Restart quiz
