| A | B |
|---|
| An electric toaster requires 1100 W at 110 V. What is the resistance of the heating coil? | 11Ω |
| A steam turbine at an electric power plant delivers 4500 kW of power to an electrical generator that converts 95 percent of this mechanical energy into electrical energy. What is the current delivered by the generator if it delivers energy at 3600 V? | 1.2 x 10 3 A |
| A microwave draws 5.0 A when it is connected to a 120 V outlet. If electrical energy costs $0.90 per kwh, what is the cost of running the microwave for exactly 6 h? | $0.32 |
| A blow dryer draws 11 A when it is connected to 125 V. If electrical energy costs $0.90 kwh, what is cost of using the blow dryer for exactly 15 min? | $0.032 |
| What happens when the switch is closed in the circuit shown? | Current from the battery glows through both the lamp and the resistor.,  |
| Three resistors connected in series carry currents, labeled l1, l2, and l3, respectively. Which of the following expresses the total current, l 1, in the system made up of the three resistors in series? | D |
| Three resistors connected in parallel carry currents labeled l 1, l 2, and l 3. Which of the following expresses the total current l 1, in the combined system? | A |
| Three resistors with values of 4.0Ω, 6.0Ω, and 10.0Ω are connected in parallel. What is their equivalent resistance? | 1.9Ω |
| What is the equivalent resistance of the resistors in the figure shown? | 10Ω,  |
| What is the equivalent resistance for the resistors in the figure shown? | 10.0Ω,  |
| Three resistors connected in parallel have individual values of , 6.0Ω , and 10.0Ω , as shown. If this combination is connected in series with a 12.0 V battery and a 2.0Ω resistor, what is the current in the 10.0Ω resistor? | 0.58 A,  |
