heating element in a stove is designed to dissipate 2,090 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.  ?A (b) Calculate the power it dissipates at that voltage.  ?W

If a brass wire is 4 cm long with a diameter of 1.3 cm, calculate its resistance. Determine the voltage drop over the brass wire for a 1.0 A current in the circuit.

All of the electrical outlets in a room are connected in a single parallel circuit. The circuit is equipped with a 20-A fuse, and the voltage is  V = 120 V.   (a) What is the maximum total power that can be supplied by the outlets without blowing the fuse? W(b) How many 2,000-W appliances can be plugged into the sockets without blowing the fuse? appliance(s)

A household washing machine connected to a household 239 Volt source draws 2 Amp of current. What is the power (in Watt) being supplied to the washing machine? Use exact numbers; do not estimate.

A microwave oven draws 8 A when supplied with 120 V. The microwave is subsequently used for 6 minutes to thaw a frozen chicken breast. In kilojoules, how much electrical energy does the microwave use while thawing? Round your answer to the nearest whole number.

An electric kettle is connected to a 120V supply and has a resistance of 25Ω. What is the current flow in the kettle?

A heating element in a stove is designed to dissipate 1,540 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. A (b) Calculate the power it dissipates at that voltage. W

What minimum number of 75-W lightbulbs must be connected in parallel to a single 120-V household circuit to trip a 30-A circuit breaker?

agle - Yahoo Searc... 0 Figure In (Figure 1), the total resistance is 20.0 kf, and the battery's emf is 33.0 V. The time constant is measured to be 12.0 μs Ris Take Test: PHY1200-... + R ww E S C 1 of 1 > openvellum.ecollege.com https://www.prometric... Submit Part B ✓ Correct t = 7.96 y pearson login - Yahoo.. Submit Previous Answers Provide Feedback Calculate the time it takes for the voltage across the resistor to reach 16.0 V after the switch is closed. Express your answer to three significant figures and include the appropriate units. μA Ω % A C μS Pearson Previous Answers Request Answer * Incorrect; Try Again; 2 attempts remaining ? Course Home 1 y cunyfirst login - Yaho... Review I Constants Copyright © 2022 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions Contact Us | Next >

a) A freezer that is never turned off draws an average current of 2.4 A when it is plugged into a 115 V outlet.  What is the yearly cost of operating the freezer if the average cost of electricity is $0.14/kWh [round your final answer to zero decimal places]?  b) If you were to replace the freezer in the question above with one that draws an average current of 3.5 A, it would result in a lower electricity cost. True or False?