g Old-style dimmers consisted of a variable resistor so you could dial in more resistance to lower the current and, hence, dim the light. If the increased total resistance caused the current to be reduced by 50%, then by what percent would the power dissipation be reduced

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive