While cooking dinner, Dinah’s oven uses a 134 V line and draws 7 A of current when heated to its maximum temperature. What is the resistance of the oven when it’s fully heated?

The label on a battery-powered radio recommends the use of a rechargeable nickel-cadmium cell (nicads), although it has a 1.25-V open-circuit voltage, whereas an alkaline cell has a 1.58-V open-circuit voltage. The radio has a 3.2 0 resistance. Hint a. With a nicad cell, having an internal resistance of 0.04 02, what is the voltage supplied to the radio, if a single nicad cell is used? The voltage supplied to the radio is b. With an alkaline cell, having an internal resistance of 0.2 , what is the voltage supplied to the radio, if a single alkaline cell is used? The voltage supplied to the radio is The radio's effective resistance is lowered when its volume is turned up. At what value of radio's resistance does a nicad cell begin to supply a greater voltage to the radio than an alkaline cell? Hint for (c) When the radio has an effective resistance of voltage can be obtained with a nicad cell. V. V. 2 or smaller, a greater

Giant electric eels can deliver a shock of 470 V with up to 1.0 A of current for a brief time. A snorkeler in salt water has a body resistance of about 730 Q A current of about 500 mA can cause heart fibrillation and death if it lasts too long. What is the maximum power Pmas a giant electric eel can deliver to its prey? W Pmax = If the snorkeler is struck by the eel, what current i will pass through her body? i = This current large enough to be dangerous. is not is What power Preseived uoes ine snorkeler receive from the eel? Preseived = careers privacy policy terms of use contact us helo about us & 87°F Rain coming PrtScn Home End PgUp PoDr FB F10 23 近

A 580 mm long tungsten wire, with a 0.048 mm diameter circular cross section, is wrapped around in the shape of a coil and used as a filament in an incandescent light bulb.  When the light bulb is connected to a battery, a current of 0.536 A is measured through the filament.  Tungsten has a resistivity of 4.9 x 10-8 Ohms x m.  How many electrons pass through this filament in 5 seconds?  What is the resistance of this filament?  What is the voltage of the battery that would produce this current in the filament?

Problem 1. A 50.0 m long Aluminum wire has a diameter of 0.50 mm and is at 20.0°C. If it carries a current of 0.50 mA, (a) calculate the power delivered to it? (b) If the temperature is increased to 340°C and the potential difference across the wire remains constant, what is the power delivered?