four-slice toaster is rated at 1200 W and designed for use with 120-V circuits. (a) What is the resistance of the toaster? (b) If all the heat generated were concentrated into 500 g of water at room temperature, at what rate would the temperature be rising?

Q: When the heated resistance of a 3.00-V flashlight is 3600, how much current flows through the bulb?…

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Q: A 100-W lightbulb has a resistance of about 12 ΩΩwhen cold (20 ∘C) and 148 Ω when on (hot).…

A: resistance when hot (R) = 148Ω resistance when cold (R0) = 12Ω Temperature of filament when cold…

Q: Person with body resistance between his hands of 10.0 kΩ accidentally grasps the terminals of a…

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Q: A typical television dissipates 275 W when it is plugged into a 120 V outlet. a). Find the…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: 8 - What is the power delivered on a 30 resistor in the circuit given in the figure? Note: The…

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Q: Answer the following Problems: 1. An 800 mA current is passing through a resistor. The voltage…

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Q: 10. What is the resistance of a circuit with three 1.5V batteries and running at a current of 5A?…

A: The given circuit has three 1.5 V batteries connected to it. So the total potential difference…

Q: A 150-volt electromotive force is applied to an RC-series circuit in which the resistance is 1500…

A: SOlution: Given that C = 5x10-6 F R = 1500 ohm E = 150 V

Q: An aluminum wire has a resistance of 3.00 N at 31.0°C. Determine its resistance (in N) at 431°C. The…

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Q: A light bulb is rated at 30 W when operated at 120 V. How much charge enters (and leaves) the light…

A: P = 30 W V = 120 v t= 4.3 min = 4.3 ×60 = 258 sec  To calculate Q

Q: A power station delivers 580 kW of power at 12,600 V to a factory through wires that have a total…

A: we have following data as given in above question Power P = 580 kW = 5.8×105 W Voltage V = 12600 V =…

Q: THREE RESISTORS OF SAME VALUE ARE CONNECTED IN SERIES TO A 12-V SOURCE. WHAT IS THEIR COMMON OHMIC…

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Q: A person notices a mild shock if the current along a path through the thumb and index finger exceeds…

A: Given:  current,, i = 80 micro Ampere  resistance of dry skin, R = 4 x 105 ohm  resistance of wet…

Q: An aluminum wire has a resistance of 3.00 2 at 31.0°C. Determine its resistance (in 2) at 431°C. The…

A: Write the expression for the resistance at a temperature T. Here, R0 represents the initial…

Q: - 44. What is the resistance of an aluminum wire of length 10 m and cross-sectional area of 0.002 m²…

A: length = l = 10 m area = A = 0.002 m2 resistivity = 2.65X10-8X 100.002= 2.65 x 10-8 ohm-m

Q: current of 0.080 A passing through a human body could be fatal. If you accidentally touched a 110 V…

A: Given V = 11O V I = 0.080 A

Q: 7.) Suppose 10 mA of current is flowing through an electrical circuit.  How many Amperes are flowing…

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Q: The current in an incandescent lamp is 0.5 A when connected to a 120 V circuit, and 0.2 A when…

A: Given data *The current in an incandescent lamp is I1 = 0.5 A *The given circuit voltage is V1 = 120…

Q: What is the effect caused by the ammeter’s resistance when an ammeter is inserted into a circuit to…

A: An ammeter is an electronic device that is used to measure the current in the circuit. The SI unit…

Q: A 120-V circuit in an intensive care unit is protected by a 20.0-A circuit breaker. It has four…

A: To solve this, we first find the maximum power allowed by the circuit breaker. Then we calculate the…

Q: A toaster has a Nichrome (a4.5x10-4 °C-) heating element that has a resistance of Ro80 2 at a…

A: Temperature coefficient, α=4.5×10-4°C-1 Resistance, Ro=80Ω      at temperature To=20°C Resistance,…

Q: The label on a portable radio recommends the use of rechargeable nickel-cadmium cells (NiCads),…

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Q: Solve the following problems with complete solutions and units using 2 decimal digits: The tungsten…

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Q: The recovery time of a hot water heater is the time required to heat all the water in the unit to…

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Q: If electric energy costs 12 cents per kwh, how many cents does it cost to keep a 1318 W toaster…

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Q: FIGURE 6 shows a simple potentiometer. Wire PQ has length 100 cm and resistance 2.4 N. The…

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Q: In her bathroom, Mindy has an overhead heater that consists of a coiled wire made of nichrome that…

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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: How many joules of energy are necessary to run a washing machine for 30 minutes if it is hooked up…

A: We know,  Power, P= V2/R  Energy dissipated, E = P * t = V2 × t /R  Given,  V = 220 V R = 10ohms t =…

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: The resistance of a copper wire increases by a factor of 1.32 when current flows through the wire…

A: The new resistance of a wire at a given temperature is given by R = Ro1+α∆T, where ∆T = T-To, Ro and…

Q: A coil of copper wire has a resistance of 62 Ω at room temperature of 24 °C. What will be its…

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Q: Gold is the most ductile of all metals. For example, one gram of gold can be drawn into a wire 2.40…

A: mass = volume x density

Q: 9. The following question is about power dissipation in a resistor, which we didnâÂÂt really cover…

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Q: consider a portable electric blanket that runs on a 6 V battery. If you use copper wire with a 0.5…

A: Given data: Battery Voltage (V) = 6 V Wire Diameter (D) = 0.5 mm = 0.5×10-3 m Power (P) = 25 W…

Q: The power rating of the heater a Nichrome wire that has a total resistance of (8 N) and carried a…

A: Solution: Calculate the potential difference across the Nichrome wire. V=IR Here, V is the voltage,…

Q: What is the resistance of a lightbulb that uses an average power of 75.0 W when connected to a…

A: Given Average power is P=75.0 W Maximum voltage is Vmax=170 V

Q: A light bulb is rated at 30 W when operated at 120 V. How much charge enters (and leaves) the light…

A: Power = 30 w voltage V = 120 V    Current through the light  I = P/ v  I = 30 / 120 = 0.25 A

Q: A small generating station produces 120 kW of effective power that is transmitted by two wires, each…

A: A small generating station produces 120 kW of effective power that is transmitted by two wires, each…

Q: 9. The following question is about power dissipation in a resistor, which we didnâÂÂt really cover…

A:

Q: The temperature coefficient of resistance of a wire is 0.00125 per degree celcius. At 300K its…

A: Given  Temperature coefficient, TRC = 0.00125 /°C  At ,T1 = 300 K , Resistance, R1= 1 ohm for…

Q: The heating element of an iron operates at 110 V with a current of 7 A. (a) What is the resistance…

A: Potential difference across the iron, V=110V Current across iron, I=7A Let the resistance and the…

Q: The temperature coefficient of resistance for carbon at 0•C is -0.00048/•C. What is the significance…

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Q: Two wires of equal length, one of aluminium and the other of iron, have the same resistance. Which…

A: Since the relative density of aluminium is less than that of iron, the mass of aluminium wire of the…

Q: The circuit below consists of a 6 Q and 15 Q resistor connected in parallel and an unknown resistor…

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Q: A lab technician is studying the effect of temperature on the resistance of a current carrying wire.…

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Q: Suppose an electrical distribution line has a resistance of 1 ohm and needs to deliver 1 MW…

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Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.