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Why does the marginal cost curve cut through the average variable cost curve exactly at the minimum of the average variable cost curve?
Marginal cost curve cuts average cost (variable or total cost) at its minimum simply to portray the law of variable proportions. The idea is as labor is increased with capital being fixed, productivity increases upto a point and then decreases and later becomes negative. To relate the same productivity with average cost function, the average cost first decreases , reaches a minimum and then increases. Now marginal cost is just a change in the total cost. Logic says that when MC is less than AC productivity is favourable, thus cost is falling. When MC is more than AC productivity is not favourable and thus the rising portion of the cost curve. When MC = AC , the productivity that was reducing the average cost per unit has maximized and from then on starts rising cost(or decreasing productivity). That is the only point where they can intersect.
Relationship between marginal cost and the supply curve for a purely competitive firm?
Marginal cost curve above the average variable cost curve, is the same as the short run supply curve. In perfect competition, MC=Price. It follows that production will be at that point. Hence the supply curve is the same as that part of the MC curve which is above AVC, where the firm can cover its variable cost....this is better than shutting down.
Why is marginal cost curve horizontal?
because mc=mb
The marginal cost mc curve always intersects the atc curve at its minimum point?
When marginal cost is below average total cost, the cost of an additional unit is lower than the average cost of all the units, so it causes average total cost to fall. If marginal cost is greater, the cost of an additional unit is higher, so average total cost will rise. So when they are equal, it will stay the same. Think of it like your GPA. Say ATC=your GPA (the average of all your grades), and MC=the grade in your next course (one particular grade). If you have a B average and get a C in your next course, your GPA will fall (like when MC is lower than ATC). If you have a B average and get an A, your GPA will rise (like when MC is higher than ATC). If you get a B in your next course, there won't be any change because it's the same as the average (like when ATC=MC).
Why avc curve U shape?
Overall because of diminishing marginal returns. The marginal cost curve, MC, decreases until diminishing marginal returns set in and and it begins to increase. When the MC is below the AVC, the AVC must fall. When the MC is above the AVC, the AVC must rise. In otherwords, if the marginal cost is decreasing the average cost must be decreasing as well and vice versa.
What is modern theory of cost?
Modern theory of cost is that the Economist belief that the average cost curve and marginal cost curve (AC & MC) are "L" shaped.
Why does the marginal cost curve cut through the average variable cost curve exactly at the minimum of the average variable cost curve?
Marginal cost curve cuts average cost (variable or total cost) at its minimum simply to portray the law of variable proportions. The idea is as labor is increased with capital being fixed, productivity increases upto a point and then decreases and later becomes negative. To relate the same productivity with average cost function, the average cost first decreases , reaches a minimum and then increases. Now marginal cost is just a change in the total cost. Logic says that when MC is less than AC productivity is favourable, thus cost is falling. When MC is more than AC productivity is not favourable and thus the rising portion of the cost curve. When MC = AC , the productivity that was reducing the average cost per unit has maximized and from then on starts rising cost(or decreasing productivity). That is the only point where they can intersect.
Relationship between marginal cost and the supply curve for a purely competitive firm?
Marginal cost curve above the average variable cost curve, is the same as the short run supply curve. In perfect competition, MC=Price. It follows that production will be at that point. Hence the supply curve is the same as that part of the MC curve which is above AVC, where the firm can cover its variable cost....this is better than shutting down.
Why is marginal cost curve horizontal?
because mc=mb
The marginal cost mc curve always intersects the atc curve at its minimum point?
When marginal cost is below average total cost, the cost of an additional unit is lower than the average cost of all the units, so it causes average total cost to fall. If marginal cost is greater, the cost of an additional unit is higher, so average total cost will rise. So when they are equal, it will stay the same. Think of it like your GPA. Say ATC=your GPA (the average of all your grades), and MC=the grade in your next course (one particular grade). If you have a B average and get a C in your next course, your GPA will fall (like when MC is lower than ATC). If you have a B average and get an A, your GPA will rise (like when MC is higher than ATC). If you get a B in your next course, there won't be any change because it's the same as the average (like when ATC=MC).
Why avc curve U shape?
Overall because of diminishing marginal returns. The marginal cost curve, MC, decreases until diminishing marginal returns set in and and it begins to increase. When the MC is below the AVC, the AVC must fall. When the MC is above the AVC, the AVC must rise. In otherwords, if the marginal cost is decreasing the average cost must be decreasing as well and vice versa.
Indicate how each of the following would shift 1. the marginal cost curve 2. the average variable cost curve 3. the average fixed cost curve and 4. the average total cost curve of a manufacturing firm?
a. Property taxes are fixed costs, so this would decrease AFC, which in turn decreases ATC.b. Wages are typically variable costs, so this would increase both MC and AVC, which in turn increases ATC.c. Electricity is typically a variable cost, so this would decrease both MC and AVC, which in turn decreases ATC,d. Insurance is a fixed cost, so this would increase AFC, which in turn increases ATC.
What happens to marginal cost after the point where it equals average variable cost?
Marginal Cost will keep increasing (have upward slope) because of the principle of diminishing marginal returns. The MC curve above the its intersection with AVC is the Supply Curve *because below minimum AVC, the firms stops production)
When the average total cost is at its minimum is it greater than MC equal to MC or smaller than MC?
Equal to MC.
Why doe the marginal cost curve go through the lawest point of average cost curve?
as the total average cost is U shape the MC will intersect with U shape at lowest point to indicate the break even point where the company does not make neither profit nor loss. and this minimum point is known as the efficient scale that minimize the losses but does not maximize profit
What is the relationship between Average variable cost Average fixed cost and marginal cost?
we can subtract the AVC and we will get the MC
Identify the characteristics of a perfectly competitive market and explain how the marginal revenue marginal cost average revenue average variable cost average total cost and price curves all interact?
Characteristics of Perfectly Competitive Market: Free entry / exit (no barriers to entry) Firms produce homogenous products There is perfect knowledge of the market Many Seller and Buyers Seller is a passive price taker Marginal Revenue Curve = Average Revenue = Price = Demand Curve for individual firm. The curve is constant Marginal Cost Curve intersects both Average Variable Cost and Average Total Cost curves at their minimum point Profit Maximisation output level is when MR = MC (find intersect point and draw line down to Q axis)
