#### Who is considered the father of electromagnetism? 1. [ ] Michael Faraday 2. [ ] James Clerk Maxwell 3. [ ] Nikola Tesla 4. [x] Hans Christian Ørsted #### What is the unit of magnetic field strength in the International System of Units (SI)? 1. [ ] Gauss 2. [x] Tesla 3. [ ] Oersted 4. [ ] Weber #### What is the principle behind an electromagnetic induction? 1. [ ] Electromagnetic waves are produced by moving electric charges. 2. [x] A changing magnetic field induces an electromotive force (EMF) in a closed loop of wire. 3. [ ] An electric current produces a magnetic field. 4. [ ] Opposite magnetic poles attract each other. #### What is the fundamental unit of electric charge in the International System of Units (SI)? 1. [x] Coulomb 2. [ ] Ampere 3. [ ] Volt 4. [ ] Ohm #### Which of the following best describes the behavior of electromagnetic waves in a vacuum? 1. [x] They travel at the speed of light. 2. [ ] They are absorbed by matter. 3. [ ] They are refracted by matter. 4. [ ] They are reflected by matter. #### What is the principle behind the operation of a transformer? 1. [ ] Electromagnetic induction is used to change the voltage of an alternating current (AC). 2. [ ] A changing magnetic field produces an electric current. 3. [x] Electromagnetic waves are produced by moving electric charges. 4. [ ] Opposite magnetic poles attract each other. #### Which of the following materials is considered a good conductor of electricity? 1. [x] Copper 2. [ ] Glass 3. [ ] Wood 4. [ ] Rubber #### What is the relationship between electric current and magnetic field? 1. [x] An electric current produces a magnetic field. 2. [ ] A magnetic field exerts a force on a moving electric charge. 3. [ ] An electric current is produced by a changing magnetic field. 4. [ ] Opposite magnetic poles attract each other. #### Which of the following best describes the nature of an electromagnetic force? 1. [x] A fundamental force that acts between charged particles. 2. [ ] A force that arises from the interaction of electric charges and magnetic poles. 3. [ ] A force that arises from the motion of charged particles. 4. [ ] A force that arises from the presence of magnetic materials.