(a) Since all the three equipment are connected in parallel to 117 V outlet.
So, potential difference across each equipment = 117 V
So, current across the lamp, I1 = V / R = 117 / 147 = 0.80 A
Current across the heater, I2 = V / R = 117 / 24 = 4.88 A
Current across the fan, I3 = V / R = 117 / 49 = 2.39 A
Therefore, total current supplied to the circuit, I = I1 + I2 + I3
= 0.80 + 4.88 + 2.39 = 8.07 A (Answer)
(b) Voltage across the fan = 117 V
(c) Current in the lamp = I1 = 0.80 A
(d) Power expended in the heater = V*I = 117*4.88 = 571 W (Answer)
1. A lamp (R = 147 W), an electric heater (R = 24 W), and a fan (R = 49 W) are connected in parallel to an extension cord plugged into a 117 V outlet. (a) What total current is supplied to the circuit? (b) What is the voltage across the fan? (c) What is the current in the lamp? (d) What power is expended in the heater?
1. A lamp (R = 147 W), an electric heater (R = 24 w), and a fan (R = 49 W) are connected in parallel to an extension cord plugged into a 117 V outlet. (a) What total current is supplied to the circuit? (b) What is the voltage across the fan? (c) What is the current in the lamp? (d) What power is expended in the heater?
A lamp (R = 147 W), an electric heater (R = 24 W), and a fan (R = 49 W) are connected in parallel to an extention cord plugged into a 117 V outlet. a) what total current is supplied to the circuit? b) what is the voltage across the fan? c) what is the current in the lamp? d) what power is expended in the heater?
1. A lamp (R = 147 ohms), an electric heater (R = 24 ohms), and a fan (R = 49 ohms) are connected in parallel to an extension cord plugged into a 117 V outlet. (a) What total current is supplied to the circuit? (b) What is the voltage across the fan? (c) What is the current in the lamp? (d) What power is expended in the heater?
A lamp (R1 = 154 ?), an electric heater (R2 = 26 ?), and a fan (R3 = 52 ?) are connected in parallel across a 120 V line. (a) What total current is supplied to the circuit? A (b) What is the voltage across the fan? (c) What is the current in the lamp? (d) What power is expended in the heater? Your response differs from the correct answer by more than 10%. Double check your calculations. W
013 (part 1 of 4) 10.0 points A 143 Ω lamp, a 27 Ω electric heater, and a 49 Ω fan are connected in parallel across a 124 V line. What total current is supplied to the cir- cuit? Answer in units of A 014 (part 2 of 4) 10.0 points What is the voltage across the fan? Answer in units of V 015 (part 3 of 4) 10.0 points What is the current in the lamp? Answer in units...
An electric heater is rated at 1360 W, a toaster is rated at 960 W, and an electric grill is rated at 1750 W. The three appliances are connected in parallel across a 120 V emf source. (a) Find the current in each appliance. heater A toaster A grill A (b) Is a 32.0 A circuit breaker sufficient in this situation? What is the total possible current through the circuit? , ___ because the total current is A
A 1500 W electric heater is plugged into the outlet of a 120 V circuit that has a 20 A circuit breaker. You plug an electric hair dryer into the same outlet. The hair dryer has power settings of 600 W, 900 W , 1200 W, and 1500 W. You start with the hair dryer on the 600 W setting and increase the power setting until the circuit breaker trips. Under what setting does the circuit breaker trip. Please, no...
1) An electric heater consumes electrical energy at a rate of P = 150 W when connected to a battery with an emf of 120 V. (a) What is the current in the heater? A (b) If you wish to increase the power consumption to 300 W, by what factor should the heater resistance be changed? Rfinal Rinitial = (c) What is the maximum power that could be drawn if the circuit contained a circuit breaker that limited the current...
An electric heater is rated at 1500 W, a toaster at 750 W, and an electric grill at 1000 W. The three appliances are connected in parallel to common 120 V household circuit. (a) How much current does each draw? (b) Is a circuit with a 25.0 Amp circuit breaker sufficient in this situation? Numerically justify your answer.