when slope of demand curve = 0 , the elasticity of demand is _______. answer with explanation Share with your friends Share 0 Prince Verma answered this Dear Student, Given: Slope of demand curve = 0 ∆P∆Q = 0This implies no matter what quantity the consumer demands, the price of the commodity will always be same.Now, Ed = 1slope of demand curve × PQ Ed = 10× PQ Ed =∞ × PQ Ed = ∞ Hence, when slope of demand curve is 0, elasticity of demand is ∞. Keep Posting!! 0 View Full Answer