The permeability of a material means A. strength of permanent magnet B. strength of an electromagnet C. the magnetization left in the iron after exciting field has been removed D. the conductivity of a material for magnetic lines of force 2. When the magnetic flux () and the area (A) under its influence are known, the magnetic flux density (B) can be given as A. B = "A A B.B = 0 C. B = D. B = A2 A 3. Which of the following is a vector quantity? A. magnetic potential B. flux density C. magnetic field intensity D. relative permeability © 4. Which of the following is a vector quantity? A. Voltage B. Current C. Area D. Volume 5. Absolute permittivity of vacuum is taken as A. 8.854 x 10-6 farad/meter C. 8.854 x 10-º farad/ meter B. 8.854 x 10-12 farad/meter D. 8.854 x 1012 farad/meter 6. In the electric field, the potential is the work done in joules A. to bring positive charge of one coulomb from infinity to that point B. to bring any charge from infinity to that point C. in moving a unit positive charge from one point to the other point D. to bring any charge from any point to infinity