A teapot with a surface area of 335 cm2 is to be plated with silver. It is attached to the negative electrode of an electrolytic cell containing silver nitrate (Ag+ NO3−). The cell is powered by a 12.0-V battery and has a resistance of 1.90 Ω. If the density of silver is 1.05  104 kg/m3, over what time interval does a 0.133-mm layer of silver build up on the teapot?

An electric current of 5 A passing through a resistor has a measured voltage of 6 V across the resistor. The resistor is cylindrical with a diameter of 2.5 cm and length of 15 cm. The resistor has a uniform temperature of 90°C and the room air temperature is 20°C. Assuming that heat transfer by radiation is negligible, determine the heat transfer coefficient by convection.

Suppose you have a rod of pure silicon with a diameter of 2.79cm and a length of 20.6cm. These rods are often used in experiments, such as the Large Hadron Collider in France/Switzerland to detect high-energy particles, and they have a very high resistivity of 2300Ω⋅m. What current, in amperes, flows through the rod when a potential difference of 1.23* 10^3 V is applied between its ends ?

An uncharged capacitor with C = 39 μF and a resistor with R = 75 Ω are connected in series with a battery of ε = 7.5 V. a) Calculate the numerical value of τ in μs.  b) Calculate the numerical value of Q in μC.

A block in the shape of a rectangular solid has a cross-sectional area of 4.00 cm^2 across its width, a front-to-rear length of 5.00 cm, and a material conductivity of 10^6 Ω x m^-1. The block’s material contains 5.00x10^22 conduction electrons/m^3. A potential difference of 35.0 V is maintained between its front and rear faces. Find: (a) the resistivity of the block material(b) the resistance of the block(c) the current through the block(d) the magnitude of the current density if it is uniform(e) the drift velocity of the conduction electrons (f) the magnitude of the electric field through the block

I have questions on parts d, e, and f.

A teapot with a surface area of 790 cm2 is to be plated with silver. It is attached to the negative electrode of an electrolytic cell containing silver nitrate (Ag+ NO3−). The cell is powered by a 12.0-V battery and has a resistance of 1.90 Ω. If the density of silver is 1.05  104 kg/m3, over what time interval does a 0.133-mm layer of silver build up on the teapot?

A 24 m length sample of an unknown metal wire is connected to a known ?= 0.56 Ω resistor and a ?= 24 V battery as shown. The unknown metal wire's cross-sectional radius is 0.0011 m. The voltage across the known resistor is measured to be 9.9 V. What is the wire sample's conductivity (in 1Ω⋅m)?

A teapot with a Surface area of 325 cm² is to be plated with silver. It is attached to the negative electrode of an electrolytic Cell Containing Silver nitrate (Ag+ NO3-). The cell is powered by a 12-0-V battery and has a resistance of 1.50. If the density of silver is 105×104 Kg/m³, over what time interval does a 0.133-mm layer of silver build up on the teapot? (Answer must be in hour).

A current of 0.870 A is circulated through a tungsten filament bulb with a battery; After 35 s the current is 0.218 A. To what temperature has the filament reached if its initial temperature is 20 °C? α=4.5x10-3 1/°C.