| A | B |
|---|
| A service station charges a battery using a current of 5.7 A for 7.0 h. How much charge passes through the battery? | ??? |
| What is the current in amperes if 1000 Na^+ ions were to flow across a cell membrane in 6.5 microseconds. The charge on the sodium atom is the same as on an electron, but positive. | ??? |
| What voltage will produce 0.25 A of current through a 3000-ohm resistor? | ??? |
| What is the resistance of a toaster if 110 V produces a current of 3.1 A? | ??? |
| A hair dryer draws 9.0 A when plugged into a 120-V line. (a) What is the resistance? (b) How much charge passes through it in 15 min? | ??? |
| If a 12-V battery pushes a current of 0.50 A through a resistor, what is its resistance, and how many joules of energy does the battery lose in a minute? | ??? |
| A bird stands on an electric transmission line carrying 2500 A. The line has 2.5 x 10^-5 ohm resistance per meter and the bird's feet are 4.0 cm apart. What voltage does the bird feel? | ??? |
| What is the resistance of a 3.0-m length of copper wire 1.5 mm in diameter? | ??? |
| The element of an electric oven is designed to produce 3.3 kW of heat when connected to a 240-V source. What must be the resistance of the element? | ??? |
| What is the maximum power consumption of a 9.0-V portable cassette player that draws a maximum of 350 mA of current? | ??? |
| What is the maximum voltage that can be applied to a 2.7-kiloohm resistor rated at 1/4 watt? | ??? |
| At $0.110 per kW-h, what does it cost to leave a 40-W porch light on day and night for a year? | ??? |
| What is the total amount of energy stored in 12-V, 90 A-h car battery when it is fully charged? | ??? |
