Consider a rectangular block of metal of height H, width W, and length L. If a potential difference V is maintained between the two W x H faces of the block, a current I(WH) is observed to flow. Find the current that flows if the same potential difference is applied between the two L x W faces of the block.

answers

watching

128

views

For unlimited access to Homework Help, a Homework+ subscription is required.

Related questions

A block in the shape of a rectangular solid has a cross-sectional area of 2.96 cm2 across its width, a front-to-rear length of 12.5 cm, and a resistance of 712 O. The block's material contains 7.57 x 1022 conduction electrons/m3. A potential difference of 44.3 V is maintained between its front and rear faces. (a) If the current density is uniform, what is its magnitude? (b) What is the drift velocity (in meter per second) of the conduction electrons?

A rectangular block of copper has sides of length 8 cm, 20 cm, and36 cm. If the block is connected to a 7.0 V source across two ofits opposite faces of the rectangular block, what are the currentsthat the block can carry?

(a) the maximum current
9522058824

(b) the minimum current
445151033.4

these are the answers I got.. which is wrong.. please tell me whatI might have went wrong and solve this one for me please! lifesaver

Textbook Problem

Two square plates of sides ℓ are placed parallel to each other with separation d as suggested in Figure P25.39. You may assume d is much less than ℓ. The plates carry uniformly distributed static charges +Q₀ and −Q₀. A block of metal has width ℓ, length ℓ, and thickness slightly less than d. It is inserted a distance x into the space between the plates. The charges on the plates remain uniformly distributed as the block slides in. In a static situation, a metal prevents an electric field from penetrating inside it. The metal can he thought of as a perfect dielectric, with κ → ∞. (a) Calculate the stored energy in the system as a function of x. (b) Find the direction and magnitude of the force that acts on the metallic block. (c) The area of the advancing front face of the block is essentially equal to ℓd. Considering the force on the block as acting on this face, find the stress (force per area) on it. (d) Express the energy density in the electric field between the charged plates in terms of Q₀, ℓ, d, and ϵ₀. (e) Explain how the answers to parts (c) and (d) compare with each other.

Figure P25.39

orangeelk492

Weekly leaderboard

Home

Homework Help 3,900,000

Physics 110,000

Related textbook solutions

Physics: Principles with Applications

Related questions

Weekly leaderboard