Permanent magnets are materials, in which the process of O a. magnetization is done easily, but demagnetization is difficult O b. demagnetization is done easily, but magnetization is difficult O c. magnetization and demagnetization is done easily O d. magnetization and demagnetization is difficult Choose the best answer: The figure shows the direction of motion of a negative charge moving in a magnetic field. What is the direction of force acting on the charge?