the current through the heating element with time in an iron when it is plugged into a standard 120 V, 60 Hz outlet. + 10+ 1 (A) - 10+ What is the average power (in W)?
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- In an old house, the wires leading to a 120 V outlet have a total resistance of 0.45 Ω . When you plug in a hair dryer, it draws a 10.0 A current. How much does the outlet voltage decrease due to the voltage drop across the wires? What is the power dissipated as heat in the wires?The figure shows variation of the current through the heating element with time in an iron when it is plugged into a standard 120 V, 60 Hz outlet. a) What is the resistance of the iron (in Ω)? b) What is the peak voltage (in V)? c) What is the average power (in W)?When plugged into a 120 V standard outlet, a current of 2.0 A flows through a string of tree lights containing 50 indentical bulbs in series. What is the power dissipated in each bulb?
- A 1.00-MQ voltmeter is placed in parallel with a 75.0-kQ resistor in a circuit. If the current through the combination is kept the same as it was through the 75.0-kQ resistor alone, what is the percentage decrease in voltage?A small office building air conditioner operates on 250 V AC and consumes 4.74 kW. What is the cost of running the air conditioner during a hot summer month when it is on 8.00 hours per day for 30 days and electricity costs 9.00¢/kW · h?A 793 W television, a 172 W microwave, and a 65.2 W computer are plugged into an outlet in a 20 A fuse and 120 V circuit. What is the total current drawn by this combination of objects?
- The current flow in a RC circuit with 25V, 80HZ AC supply is 1.047 A as shown in the figure. Determine the capacitance (C) in the circuit.A 50.7 ohm resistor is put into a circuit with a 16 volt battery. What is the power dissipated (in watts) by the resistor?A 802.73 watt generator can produce a current of 17.12 amps through a circuit. What is the total voltage across the circuit?
- PS 2: A 12-volt battery of internal resistance r of 0.05 ohm is to be recharged u, source at the rate of 8 amperes. 30-volt dc a. What resistance R is to be connected in series with the circuit? ANSWER: b. What is the terminal voltage of the battery? c. How much energy in joules is dissipated in the resistor in one hour ? ANSWER: ANSWER:A 0.7-F capacitor is connected in series with a 9-ohm resistor. If the connection is energized from an 11-V DC source, determine the voltage (in volts) across the resistor at t = 2.75 ms. The initial charge is 175 mC. Express your answers accurate to four decimal places.Two different electrical devices have the same power consumption, but one is meant to be operated on 120-V AC and the other on 240-V AC. Assuming its resistance is unaffected, by what factor will the power increase if a 120-V AC device is connected to 240-V AC?