Our charged cells and electromagnetism
Every cell in the body has an electrical voltage across its cell membrane, called the resting membrane potential. This means that the inside of the cell is electrically negative relative to the outside. This voltage arises because of differences in the concentration of ions (electrically charged particles) such as sodium (Na⁺) and potassium (K⁺) between the inside and outside of the cell. When there is energy, there is always a field around it that can be measured electrically and magnetically.
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