Ключевые слова: art, battery, blue, bulb, charge, circuit, color, colorful, concept, contour, cord, creative, current, diagram, education, electric, electrical, electricity, electronic, energy, engineering, glass, icon, idea, illustration, innovation, inspiration, isolated, lamp, light, lightbulb, line, linear, lineart, network, outline, physics, plug, power, science, simple, switch, symbol, technology, voltage, white, wire,