A charge q-2×10-19 Cunder goes through electric and magnetic fields of strength 1.5 C/m and 2.5×104 T. What is total force on the charge? Also calculate how much work is done by the magnetic field on the charge? 9. 10. A solenoid has N-100 turns per unit length which has 5 A currents. How much magnetic field is produced at the center of the solenoid? 11. Expand magnetic potential vector in terms of multipoles and calculate the ratio between electric dipole and magnetic dipole. 12. Write down 4 equations of the Maxwell in free space and show that which gives predicts that there are no magnetic charges that exit. In case magnetic charges are found how would Maxwell Equations change?