A certain wire is used in electric heaters has a resistance of 1.75 Ohm/ft. How much wire is needed to make a heating element for a toaster which takes 8.25 A from a 115-Volt line?

Q: A toaster has a resistance of 10.8 ohms and is plugged into a 120 V power supply, what is the…

A: Write the given values with the suitable variables. R=10.8 ΩV=120 V Here, R is the resistance and V…

Q: An electric heater is constructed by applying a potential difference of 121.2V across a wire with a…

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Q: A 240V household appliance has an electrical resistance of 209 Ohms. How much energy will it use in…

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Q: When a cell of emf 6 V is connected in a circuit gives a terminal voltage of 5.25 V for a total…

A: Given : emf of cell, E = 6 V             terminal voltage of cell, V = 5.25 V             Current, I…

Q: What voltage will produce 0.4 A of current through a 4800 resistor?

A: Given: Current, I = 0.4 A Resistance, R = 4800 Ω To determine: Voltage, V

Q: How much energy per unit time does a 6.0 V portable radio use if it draws 250 mA of current?

A: Given data :-                                Voltage V = 6 volt…

Q: An electric heater is constructed by applying a potential difference of 129.5V across a wire with a…

A: Given:   Potential difference of electric heater, V = 129.5 Vresistance, R = 5.0 Ω

Q: A color television set draws about 2.5 A when connected to a 220-V source. What is the cost (in…

A: Given data The current flows in the colour television is I = 2.5 A. The voltage is given as V = 220…

Q: If an electrical component with a resistance of 35 2 is connected to a 112-V source, how much…

A: Resistance , R = 35 Ω Voltage , V = 112 V To find = Current

Q: A heater is rated as 240 V, 10 kW. How much current does it draw?

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Q: A heating element is marked 210 V, 630. What is the value of the current drawn by the element when…

A: The heating element is marked with the the maximum voltage and power it can endure. In this case it…

Q: The resistance of an electric heater is 25 Ω when connected to 120 V. How much energy does it use…

A: Given: Resistance of the electric heater, R = 25 Ω  Potential difference, V = 120 V time duration of…

Q: A color television set draws about 1.9 A when connected to a 220-V source. What is the cost (in…

A: Power of television is P=IV=1.9 A220V=418 W=0.418 kW

Q: A metal wire has a resistance of 10.00 A at a temperature of 20.0°C. If the same wire has a…

A: The change in resisitance with respect to change in temperature shows a linear natur.therefore, we…

Q: A cheaper cord utilizes thinner wire and has a resistance of 0.300 Ω . What is the voltage drop in…

A: Using ohm's law, V=IR

Q: An electric heater carries a current of 13.5 A when operating ata voltage of 1.20 x 102 V. What is…

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Q: When 126.0 V of potential difference is applied across a lightbulb, its filament develops a…

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Q: A voltmeter connected across the terminals of a tungsten-filament light bulb measures 112 V when an…

A: Here we have to use some basic formula.

Q: A power transmission line is hung from metal towers with glass insulators having a resistance of…

A: We know that V=IR                                where V= voltage…

Q: What is the voltage across the terminals of a 38 ohms resistor that has 0.082 A of current flowing…

A: Given data :           Current = i            Resistance = R     To find :                Voltage

Q: A PlayStation draws a current of 143 mA at 120 V. How much power (in W) does the device require?

A: Given:- Current drawn by the playstation is  I=143 mA   =143 mA×1 A103 mA   =0.143 A Votltage is…

Q: A water heater that is connected across the terminals of a 15.0 V power supply is able to heat 250…

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Q: A 440.0-volt electric heater draws 10.00 amperes of current. According to Ohm's law, what is the…

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Q: Suppose your portable DVD player draws a current of 350 mA at 6.00 V. How much power does the player…

A: Given- Current drawn by DVD player , I = 350 mA = 0.350 A Voltage across  DVD player , V = 6.00  V

Q: Copper wiring in a house usually has a diameter of approximately 1.5mm. What length of copper wire…

A: Given that - Diatmeter of copper wire(D) =1.5mm=1.5*10^-3m Resistance(R)=1.0 ohm Resistivity of…

Q: A cheaper cord utilizes thinner wire and has a resistance of 0.300Ω. What is the voltage drop in it…

A:

Q: Assuming the cost of energy from the electric company is $0.075/kWh, compute the cost per day of…

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Q: A copper wire has a resistance of 10 ohms at 20 °C. What is the resistance if the temperature is…

A: Electrical resistance of a conductor is given by- When RT = 80 oC

Q: A metal wire has a resistance of 10.00 A at a temperature of 20.0°C. If the same wire has a…

A: Given that                  Resistance R0=10.00ΩTemprature T0=20 °CResistance R=10.55ΩTemprature…

Q: The resistance of an electric heater is  70 Ω  when connected to 120 V. How much energy does it use…

A: Resistance of electric heater (R) = 70 Ω Voltage (V) = 120 V Time (t) = 45 min = 45×60 sec = 2700…

Q: How much current must be applied across a 60 light bulb filament in order for it to consume 55 W of…

A: Given data:  Resistance (R) = 60 Ω Power (P) = 55 W Required: Current (I)

Q: The sticker on a compact disc player says that it draws 288 mA of current when powered by a 9 Volt…

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Q: A bar of copper has a mass of 1.5 kg is to be drawn into a wire having a resistance 250 Ω at 20°C.…

A: Given: The mass of the copper wire is 1.5 kg. The resistance of the wire is 250 Ohm. The density of…

Q: If 18 A flows through a 37 V battery in a certain circuit, how much would it could cost to operate…

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Q: A wire 6.20 m long with a diameter of 2.05 mm has a resistance of 0.0290 ohms. What material is the…

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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: Standard automobile batteries have six lead-acid cells in series, creating a total emf of 12.0 V.…

A: The expression for the required individual emf of lead-acid cell,

Q: If an electrical component with a resistance of 62 Ω is connected to a 111-V source, how much…

A:

Q: An electric heater is constructed by applying a potential difference of 127.2V across a wire with a…

A:

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: The resistance of an electric heater is 20N when connected to 120 V. How much energy does it use…

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Q: The resistance of electric heater is 75 Ohm when connectedto 120 V What is the power consumption of…

A: Given that :Resistance of the electric heater (R) = 75 ohmVoltage ( V) = 120 VPower consumption (P)=…

Q: The resistance of electric heater is 32 Ohm when connectedto 120 V What is the power consumption of…

A: Answer:        Given Values,

Q: The resistance of a coil of copper wire is 3.35 2 at 0°C. What is the resistance at 50°? (copper, a…

A: The resistance and temperature relationship is R=R01+α(T-T0) Here R is resistance at temperature T,…

Q: The resistance of electric heater is 13 Ohm when connectedto 120 V What is the power consumption of…

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Q: A secondary cell after long use has an emf of 1.9 V and a large internal resistance of 380 ohm. What…

A: Given value--- emf of battery = 1.9 V. internal resistance = 380 ohm. We have to find--- maximum…

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.