1. [-/2 Points] DETAILS MY NOTES ASK YOUR TEACHER Find the equivalent resistance between points a and b in the figure below. (Let R = 3.00 Q, R2 = 6.00 Q, R3 = 3.200.) a R2 ww 1.80 23 3.50 b. w R3 Read It Need Help? Submit Answer 2. [-/4 Points] DETAILS For the following combination of resistors: 7.00 4.00 9.00 R PRACTICE ANOTHER MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER a b (a) What is the equivalent resistance between points a and b? (R = 14.0 92) (b) Determine the current in each resistor if there is a potential difference of 18.0 V applied between points a and b. 1 (4.002) 1 (7.002) = A (14.02) 1 (9.00 2) = = A A 123 Tutorial Submit Answer 3. [-/2 Points] DETAILS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER For the circuit diagrammed below, let R = 4.00 92, R2 = 9.00 2, and E = 9.00 V. 10.0 w R www 2.00 5.00 www W (a) What is the voltage across R? (b) Find the current in R. A Submit Answer R 4. [-/2 Points] DETAILS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER An automobile battery has an emf of 12.6 V and an internal resistance of 0.0880 2. The headlights together have an equivalent resistance of 6.20 (assumed constant). (a) What is the potential difference across the headlight bulbs when they are the only load on the battery? (Enter your answer to at least two decimal places.) V (b) What is the potential difference across the headlight bulbs when the starter motor is operated, with 35.0 A of current in the motor? (Enter your answer to at least two decimal places.) Need Help? Read It Watch It Submit Answer 5. [-/2 Points] DETAILS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A heating element in a stove is designed to receive 3,025 W when connected to 240 V. (a) Assuming the resistance is constant, calculate the current in the heating element if it is connected to 120 V. (b) Calculate the power receives at that voltage. W Need Help? Read It Master It Submit Answer 6. [-/3 Points] DETAILS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER An electric heater is rated at 1.75 x 103 W, a toaster at 750 W, and an electric grill at 1.00 103 W. The three appliances are connected to a common 120-V household circuit. (a) How much current does each draw? heater A toaster grill A A (b) If the circuit is protected with a 30.0-A circuit breaker, will the circuit breaker be tripped in this situation? Yes No Explain your answer. This answer has not been graded yet. Need Help? Read It Master It Submit Answer