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Name: _______________________Block: _________ Date: ______________ IP614 V = IR, P = IV Practice SHOW ALL WORK: Formulas used, numbers plugged in, final answers with units. 1. What voltage (potential difference) can send 2.5 A of current through a resistance of 10 Ω? 2. What voltage (potential difference) can send 6 A of current though a resistance of 10Ω? 3. A 12 V battery sends 0.45 A though a resistor. What is the value of the resistor? 4. A 120 V outlet sends 2.5 A through a resistor. What is the value of the resistor? 5. A 1.5 volt battery is connected to a 50Ω resistor. How much current flows through the resistor? 6. A 50 V potential difference (voltage) is applied across 75Ω of resistance. What current passes through the resistor? 7. A 120 V potential difference sends a current of 0.5 A through a light bulb. How much power is the bulb using? 8. A 120 V potential difference sends a current of 0.83 A though a light bulb. What is the power rating of the bulb? 9. When a South American electric eel attacks prey, a 440 V potential difference draws a current of 0.8 A. What is the electric resistance? 10. Calculate the resistance and the current of a 7.5 W night light bulb plugged into a US household outlet (120 Volts). 11. Calculate the resistance and the current of a 1500 watt electric hair dryer plugged into a US household outlet (120 Volts). 12. Determine the power of a saw that draws 12 amps of current when plugged into a 120 Volts outlet. 13. In an experiment, the current is varied as it goes through a resistor in a circuit. An ammeter measures the current going through the resistor and a voltmeter measures the voltage across the resistor. The data is recorded and shown below: Circuit Data Current (A) Voltage (V) 0.20 1.2 0.40 2.4 0.80 4.8 1.20 7.2 1.60 9.6 2.80 16.8 a. Using the data in the table, make a graph of the voltage versus the current in the circuit. Voltage should be on the y-axis. Make sure the graph has clearly labeled axes and proper scale. b. Find the slope of the graphed line. Show your calculations and included units in your answer. c. Explain what the slope represents.