Unms of resistance, Find the current when the heater is operated with standard household voltage of 120 V. 13. The voltage of the current in your house is generally 120 v. a) What current is drawn by a 60 watt light bulb? b) What is the resistance of a 60 watt light bulb? c) If your microwave oven is rated at 1500 watts (including turntable, lights, etc.), find the current it draws while running, and its resistance. d) If your toaster has a resistance of 11.0 ohms, find the current necessary and power rating of the toaster. 14. A 6.0 V battery is connected to a circuit with a resistance of 2.0 2. a) Find the current. b) If the voltage is doubled, but the resistance remains the same, what is the new current? (What type of a relationship exists between voltage and current with a constant resistance?) 15. A 1.5 volt battery causes a small motor to run using 50.mA of current. What power does the motor use? 16. A light bulb consumes 75 watts when connected to a household current of 120 V. Find the current and resistance of the light bulb. 17. A flashlight bulb uses a voltage of 3.0 V and draws a current of 1.5 A. What is the power rating of the bulb? 184

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MCQP: 13-17 (page 184)

12. An electric heater has 12 ohms of resistance, Find the current when the heater is operated with standard
housebold voltage of 120 V.
13. The voltage of the current in your bouse is generally 120 v.
a) What current is drawn by a 60 watt light bulb?
b) What is the resistance of a 60 watt light bulb?
c) If your microwave oven is rated at 1500 watts (including turntable, lights, etc.), find the current it
draws while running, and its resistance.
d) If your toaster has a resistance of 11.0 ohms, find the current necessary and power rating of the
toaster,
14. A 6.0 V battery is connected to a circuit with a resistance of 2.0 2.
a) Find the current.
b) If the voltage is doubled, but the resistance remains the same, what is the new current? (What type of
a relationship exists between voltage and current with a constant resistance?)
15. A 1.5 volt battery causes a small mnotor to run using 50.mA of current. What power does the motor use?
16. A light bulb consumes 75 watts when connected to a houschold current of 120 V. Find the current and
resistance of the light bulb.
17. A flashlight bulb uses a voltage of 3.0 V and draws a current of 1.5 A. What is the power rating of the bulb?
184
Page 184 / 218
Transcribed Image Text:12. An electric heater has 12 ohms of resistance, Find the current when the heater is operated with standard housebold voltage of 120 V. 13. The voltage of the current in your bouse is generally 120 v. a) What current is drawn by a 60 watt light bulb? b) What is the resistance of a 60 watt light bulb? c) If your microwave oven is rated at 1500 watts (including turntable, lights, etc.), find the current it draws while running, and its resistance. d) If your toaster has a resistance of 11.0 ohms, find the current necessary and power rating of the toaster, 14. A 6.0 V battery is connected to a circuit with a resistance of 2.0 2. a) Find the current. b) If the voltage is doubled, but the resistance remains the same, what is the new current? (What type of a relationship exists between voltage and current with a constant resistance?) 15. A 1.5 volt battery causes a small mnotor to run using 50.mA of current. What power does the motor use? 16. A light bulb consumes 75 watts when connected to a houschold current of 120 V. Find the current and resistance of the light bulb. 17. A flashlight bulb uses a voltage of 3.0 V and draws a current of 1.5 A. What is the power rating of the bulb? 184 Page 184 / 218
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