Biofeedback is a natural method that has been found to be helpful for many persons with migraine headaches, ADHD, epilepsy, stroke, anxiety, addictions, asthma, depression, hypertension, muscle spasms, sleep disturbance, chronic pain, stomach pain, stress, and other symptoms and conditions for both children and adults.
If the electric circuit is purely resistive, that is, a configuration of resistors only connected to a battery; the source energy continually gets dissipated entirely in the form of heat. This is known as the heating effect of electric current.
The power supplied to a circuit by a battery is calculated using P = VI. Batteries and power supplies supply power to a circuit, and this power is used up by motors as well as by anything that has resistance. The power dissipated in a resistor goes into heating the resistor; this is know as Joule heating. In many cases, Joule heating is wasted energy.