11ac1064_ions___Astronomy___Black_Holes__Question
[Date Answered] May 19, 1999 [Questioner (age, location)] Linda and Ellen (Alaska, USA) [Answer] Magnetic field lines are generated by movement of electric field lines. An electric field forms when electric charge falls into a black hole. In this case, the "swallowing" of photons produces an electric charge within the hole, creating an electric field around it. When the black hole rotates, this electric field rotates as well. This creates a magnetic field. [Question] 
According to Quantum Electrodynamics, the electromagnetic force is transmitted by photons, yet black holes are said to have the characteristic of a magnetic field. How can this be when photons are transmitting the field and they travel slower than the escape velocity of a black hole?
Quickie Questions - Astronomy - Black Holes