The Electrical Equivalent of Heat is 1 cal = 4.18 J. A lamp connected to a 120-V power source develops 60 kilocalories in 10 minutes. The current in the coil is:
The Electrical Equivalent of Heat is 1 cal = 4.18 J. A lamp connected to a...
lectrical Heat Equivalent Experiment lorimeter cup with electrical heater is used to warm up 50g of water. The voltage on the ating coil is measured to be 6V and the current is 3A. The heater is turned on for a time period f2 minutes. What is the electrical energy (in Joule) used in this experiment? (s A) 4.186J B) 33.7J C) 10800 : If 2 calories of heat is transferred as energy, how many Joules of energy is there? (assume...
A 20.0- lamp and a 5.0- lamp are connected in series and placed across a potential difference of 50.0 V. What is a. the equivalent resistance of the circuit? b. the current in the circuit? c. the voltage drop across each lamp? d.the power dissipated in each lamp?
Mass of the calorimeter cup = 60 gm; mass of water= 100 gm; water equivalent mass of coil =2.5 gm; initial temperature of the water = 20° C; final temperature of water in cup = 41° C; total heating time = 20 minutes. Using this initial data set, complete the rest of the data sheet. Take the specific heat of the water as 1cal/gmº C and cup as 0.22 cal/gmº C. The average current and voltages are 2.75 A and...
An electric heater is used to heat up 3.00× 102 kg of water from 10.0°C to 80.0°C in twenty minutes. Assuming that the heater is connected to a 120-V (rms) source and all electric power is used to heat the water, what is the resistance of the coil in the heater? The specific heat of water is 4186 J/(kg K).
An inductance coil draws 3.7 A dc when connected to a 36 V battery. When connected to a 60-Hz 120 V (rms) source, the current drawn is 2.0 A (rms) Determine the resistance of the coil. Determine the inductance of the coil.
Check my Required information You are standing 1.30 m from a heat lamp that draws an rms current of 15.00 A when connected to 120 Vrms. If you stand in front of the heat lamp for 2.00 min, how much energy is incident on your face? Assume your face has a total area of 2.80 x 10-2 m2
Using Matlab When several resistors are connected in an electrical circuit in parallel, the current through each of them is given by in=vs/Rnwhere in and Rn are the current through resistor n and its resistance, respectively, and vs is the source voltage. The equivalent resistance, Req, can be determined from the equation 1/Req=1/R1+1/R2+1/R3+.......+1/Rn. The source current is given by is , and the power, Pn, dissipated in each resistor is given by . is=vs/Req, and Pn=vsin. Write a program in...
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
(20 points) From your knowledge of Physics and Electrical Circuits, for the parallel and series resistor circuit shown: 2) It a) Compute the equivalent resistance and theAO current IT 1a 12v R 120 R-120 b) Compute the power delivered by the 12 V source.
Q5: The circuit show below has two loads connected to 120 V (rms), 60Hz, house-hold supply. The load-1 is a resistive load (lamp) with a total power of 5 kW. The load-2 is a motor drawing 10 kVA at 0.6 power factor, lagging. The capacitor is initially not connected a) Calculate the load currents (phasor) I and 12 14] b) Calculate the supply current I c) What is the power factor of the source when it supplies to both loads?...