What energy is being transformed an electric blanket warms a bed on a chilly night

Electric blankets have insulated wiring woven into them. When plugged in and turned on, the electric energy recieved from the electrical outlet is transferred to heat.

Electricity naturally produces heat when conducting, and by using insulation on the wires, this temperature can be controlled and gently warm the person whom the blanket is covering.

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

i don't understand. explain it clearly