In the circuit, a 20-ohm resistor sits inside 115 gg of pure water that is surrounded by insulating Styrofoam.   If the water is initially at temperature 11.6 ∘C, how long will it take for its temperature to rise to 58.8 ∘C? Use 4190 J/kg⋅∘C as the specific heat of water, and express your answer in seconds using three significant figures.

Q: The 120 V electric heater in a coffee maker has a resistance of 15 Ω. How long will it take for this…

A: Given: The voltage of electric heater is V=120 V. The resistance of electric heater is R=15 Ω. The…

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A: Given that                     The power of the bulb is (P) = 45W                      Time = 60days…

Q: A 200-m length of copper wire has a resistance of 2.0 ohms and a resistivity of 1.72 x 10-8…

A: Length of copper wire L = 200 m Resistance of copper wire R = 2 Ω Resistivity of copper wire ρ =…

Q: How many watts does a flashlight that has 6.00×102 C pass through it in 0.500 h use if its voltage…

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Q: How many watts does a flashlight that has 6.00×102C pass through it in 0.500 h use if its voltage is…

A: Given, Charge 6.00*102 C Time t is 0.500 hours And voltage is 3.00 V

Q: The total conductance of the circuit shown in Fig. 8 is: 10 2 22 12 ww 013 S 01.6 S 06 S 0 2.5 S…

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Q: A current of 1.78 A fHows through a 58.2 2 resistor for 9.1 min. How much heat was generated by the…

A: Given data:  Current (I) = 1.78 A Resistance (R) = 58.2 Ω Time (t) = 9.1 min Required: Heat…

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Q: 02. How much charge passes a single point in a wire in 0.15 seconds if a current of 1.44 A is…

A: A charged object is the one having an unequal number of positive and negative charges. A neutral…

Q: The rear window defogger of a car consists of thirteen thin wires (resistivity = 83.8 x 10-8Ω·m)…

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Q: 1. A wire used for wiring electric ranges, hot water heaters, stoves and hairdryers where both heat…

A: This question is based on the study of different types of wires and cables. A wire is a single…

Q: 8) (5 pts) In the following figure, what will happen to the brightness of bulbs A and B if C is…

A: Solution of above question given in below step. option A is RIGHT

Q: A thermometer made of Platinum has a resistance of 50 N at 20 C, what is the measured temperature…

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Q: The heating coil of a hot water heater has a resistance of 20 ohms and operates at 210 V. If…

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Q: How much more energy does a 100 W light bulb use if it is left on 2.08 hours, versus a high…

A: Energy consumed by 100W bulb is E=Pt=100 W2.08 h=0.208×103 Wh=0.208 kWh

Q: Given the temperature coefficient of resistivity of a certain wire to be 3.1 x10−3 (°C)−1.By what…

A: Given temperature coefficient of resistivity , α=3.1 x10−3 (°C)−1 Let   T1 =20.0°C        T2 = 79.48…

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Q: An aluminum wire has resistance of 80 ohms at 30 degree Celsius. And determine its resistance when…

A: Given: Initial Resistance of wire (R0) = 80 ohms. Initial Temperature of wire Ti= 300C Final…

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Q: Calculate the energy cost of an electroplating process running at 0.51 V and 26.1 A for 3782 s…

A: Power P is given by, P = I V where I is current and V is voltage. Now, energy E=Power×Time Given,…

Q: . Calculate the resistivity of 30 m of conducting wire that has a diameter of 0.0035 m and a…

A: Given values: Length of the wire, l=30 m The diameter of the wire, d=0.0035 m Resistance, R=0.50 Ω

Q: 1) Gold is the most ductile of all metals. For example, 1 gram of gold can be drawn into a wire 2.4…

A: Here, I’ve answered Q.No.1

Q: An electric iron operating at 120 volts draws 10 amperes of current. How much heat energy is…

A: Potential difference V = 120 volts. Current I = 10 A. Time t = 30 s. Energy E = V x I x t

Q: If 1.19 miles of 24-gauge copper wire has a resistance of 1.28 kΩ and the resistivity of copper is…

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Q: A metal wire has a resistance of 10.00 W at a temperature of 20°C. If the same wire has a resistance…

A: Given: The resistance of the wire at 20 oC is 10 w. The resistance of the wire at 90 oC is 10.55 w.…

Q: What current flows through a bulb if 360c of charge flows through a bulb in 20 minutes?

A: The expression for the current i flowing through the bulb is given as, Here Q denotes the electric…

Q: Electric heater is used to heat 0.63 liters/minute of 3. water (c, = 4.18 kJ/kg.K, density =1000…

A: 0.63lit=0.00063m3Mass of 0.00063m3=0.00063m3×1000kg/m3=0.63kg Heat reqired to raise the temperature…

Q: A piece of resistance wire, 15.6 m long and of cross-sectional area 12 mm² 0 °C, passes a current of…

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Q: How could a battery, a light bulb, and some lengths of metal wire be used as a conductivity tester,…

A: A bulb is a electrical object which glows  when the electric current passes through it . and when…

Q: A freezer that is never turned off draws an average current of 2.5 A when it is plugged into a 115 V…

A: given that,current, I=2.5 Avoltage, V=115 Vaverage cost of freezer $0.16 per kWh

Q: The resistance of a filament of a bulb is 200 2 when the bulb is lit up and 12 N when it is not lit.…

A: Given: resistance at 30oC  is R30 = 12 ohm resistance at Temperature T RT = 200 ohm T1 = 30o C…

Q: An electric heater is made by applying a potential difference of 100 V between the ends of a…

A: solution as

Q: An electric washing machine draws 2.1 A when connected to a 121 V power line. In Arkansas, the…

A: The power consumed by the washing machine can be found as, Here, V and I, represent the voltage of…

Q: At 20°C, the carbon resistor in an electric circuit connected to a 6.0-V battery has a resistance of…

A: Given  At 20° C ,  The voltage supply ,V = 6.0 V  Resistance , R = 2.6*102 ohm    At 73 ° C ,  the…

Q: 9- An electric devices draws a current of 650 HA at 8 V. How much power does the device require? O…

A: Current (I) = 650 μA Potential Difference (V) = 8 V

Q: A charge of 16.0 C is sent through an electric lamp when the difference of potential is 220V. What…

A: If a charge q is sent through a potential difference  ∆V then the energy expended is, U = q∆V

Q: Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the…

A: The efficiency of the motor,(η)=0.95 ----(1) [Given] The voltage of the battery,(V)=12 V -----(2)…

Q: Compute the resistance of a hardened copper rod 2 meters long and 8 mm in diameter if the…

A: