Correction, alternating current flowing through a wire will produce EMF. Direct current, the type produced by batteries, does not produce EMF except for the first brief surge when you initially turn on a switch. Batteries in the Hybrids will not produce harmful EMF, the motor might however.
“Direct current, the type produced by batteries, does not produce EMF”
Maxwell will be shocked to learn this. Pun intended.
EMF is produced by electricity, DC or AC. The “electric field” is related to the voltage, the “magnetic field” is related to current - thus the term “electromagnetic field”, or EMF.