Q: An electric space heater is connected across a 120 V potential difference. If 1.5 kW of power are…
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Q: An electric heater is constructed by applying a potential difference of 121.2V across a wire with a…
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Q: An aluminum wire has a resistance of 20Ω at room temperature (20°C). Calculate the resistance of the…
A: The resistance and temperature mathematical relation is R=R01+αT-T0 Here R0 is resistance at…
Q: When measuring a potential difference of 10 volts, how much current is drawn by a voltmeter with 10…
A: Formula of current drawn by a voltmeter is as follows; I=VRv…
Q: A clothes dryer uses 20 A of current. How much charge flows through the circuit in a single 60…
A: The current in a circuit is defined as the charge flowing though a point in the circuit in unit time…
Q: A certain aluminum wire has a resistance of 5-ohms at 20 degrees celcius. What is the resistance of…
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Q: What is the resistance (in ) of a 21.5 m long piece of 27 gauge copper wire having a 0.361 mm…
A: Given data: A piece of 27 gauge copper wire Length (L) = 21.5 m Diameter (d) = 0.361 mm =…
Q: The potential difference across the terminals of a battery is 20V when the circuit is open. When a…
A: Potential difference across the terminals of a cell when circuit is open is known as EMF. Hence, EMF…
Q: There is a net passage of 5.5 x 1018 electrons by a point in a wire conductor in 0.14 s. What is the…
A: The expression for charge is,
Q: What is the new resistance in a wire at 50 degree C when initial resistance is 20 ohms at 30 degree…
A: Resistance of any electrical device is the ratio of given voltage to the current flowing through…
Q: An electric heater is constructed by applying a potential difference of 112V across a wire with a…
A: Given : Potential difference = 112 V Resistance = 15 Ω
Q: An 20.2 W device has 9.01 V across it. How much charge goes through the device in 4.20 h?
A: Power of the device (P) = 20.2 Wpotential difference (V)= 9.01 VTime (t) = 4.20 hoursusing 1 hour =…
Q: The resistance of a wire is 20 Ω. What will be new resistance, if it is stretched uniformly 8 times…
A: Given: Resistance, R= 20 Ω The length of wire is stretches to 8 times its original length To…
Q: A potential difference of 50.0V can move 3.22x 1022 electrons in 5 minutes through a wire. What is…
A: Given data: Potential difference (V) = 50.0 V Number of electrons (n) = 3.22 × 1022 Time (t) = 5…
Q: When 126.0 V of potential difference is applied across a lightbulb, its filament develops a…
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Q: A silver wire has a resistance of 2.1 ohm at 27.5 °C, and a resistance of 2.7 ohm at 100 °C.…
A: Given that - Initial temperature Final temperature Resistance of the silver wire at initial…
Q: A current of 0.86 A flows through a copper wire 0.74 mm indiameter when it is connected to a…
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Q: An electrician finds that a 1.4 m length of acertain type of wire has a resistance of 0.24 Ω .What…
A: Given information: The length of the wire (l1) = 1.4 m The resistance in the wire (R1) = 0.24 ohm…
Q: An electric heater is constructed by applying a potential difference of 110 V across a wire with a…
A: Potential difference , V =110 V Resistance of the wire R = 5 Ω Using Ohm's law the current I in the…
Q: A tungsten filament has a resistance of 133 Ω at 1500C. If the temperature coefficient of resistance…
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Q: What is the resistance of an automobile through which 2.50 A flows when 12.0 V is applied to it
A: Given Current, I = 2.50 Ampere Voltage applied ,E = 12.0 V So resistance,R =???
Q: When current flows through a 240 resistor dissipates energy is 60 watt. How much charge is passing…
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Q: An electric heater is constructed by applying a potential difference of 110 V across a wire with a…
A: Given The potential difference across a wire is ΔV = 110 V. The resistance of the wire is R = 5 Ω.…
Q: An iron wire has a diameter 7.25 mm and resistivity 9.71x 10-8 Qm. What will be the length of this…
A: Answer (a) 4251.534 m (b) 2.5 ohm
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: What is the current through a resistor (12.08 Ω) if the voltage across the resistor is 15.88 V?
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Q: There is a net passage of 5.6 ✕ 1018 electrons by a point in a wire conductor in 0.28 s. What is the…
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Q: What is the current produced by a 9 V battery flowing through a resistance of 200 Ω?
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Q: How much would you have to raise the temperature of a copper wire (originally at 20°C) to increase…
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Q: What is the internal resistance of a dry cell which has an emf of 1.55 Volts if it has a short…
A: E.m.f of the circuit is E = 1.55 Volts Short circuit current is I = 22 A Suppose that internal…
Q: Question 6 A resistor dissipates 1.5 W when it is connected to a battery with a potential difference…
A: Power, P = 1.5 W Potential difference, V = 12 volts Resistance, R = ?
Q: An electric device delivers a current of 5 A for 10 seconds. How many electrons (1.6x10-19 C) flow…
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Q: How much is resistance is needed by your body to resist a current of 8 x103 A from a 110V?
A: “Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: If 2 resistors of 5kΩ and 7kΩ are connected in series across a 15V battery, then potential…
A: Given data: Two resistors are connected in series R1 = 5kΩ R2 = 7kΩ Battery voltage (V) = 15 V…
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: An electric heater is constructed by applying a potential difference of 107.3V across a wire with a…
A: Given- Potential difference V=107.3 V Resistance R=5 Ω
Q: A small bulb is rated at 7.5 W when operated at 125 V. The tungsten filament has a temperature…
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Q: A wire has a resistance of 20 Ω. What is the new resistance if it is extended 8 times its original…
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Q: There is a net passage of 5.1 1018 electrons by a point in a wire conductor in 0.26 s. What is the…
A: Given data The net amount of passage of the electron is: n = 5.1 × 1018 electrons The time taken to…
Q: The electromotive force of a cell is 1.5 V. When connected to n external load of 3 Ω, the voltage…
A: Given end of cell =1.5 V voltage drop across 3 Ω = 1.35 V We have Find (i) the current (ii) the…
Q: The difference of potential between the terminals of an electric heater is 120V when there is a…
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Q: Copper wiring in a house usually has a diameter of approximately 1.5mm. What length of copper wire…
A: Given data The diameter of the wire is d= 1.5 mm = 1.5 x 10-3 m The resistance of the wire is R = 1…
Q: An electric device delivers a current of 0.5 A for 10 seconds. How many electrons (1.6x10-19C) flow…
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- The human body can exhibit a wide range of resistances to current depending on the path of the current, contact area, and sweatiness of the skin. Suppose the resistance across the chest from the left hand to the right hand is 1.0 106 . (a) How much voltage is required to cause possible heart fibrillation in a man, which corresponds to 500 mA of direct current? (b) Why should rubber-soled shoes and rubber gloves be worn when working around electricity?A man owns a canister vacuum cleaner rated at 353 W, 120V. (i). What is the electrical resistance of the vacuum cleaner? (1.5 points) (ii). How much energy in joules and in kWh is consumed if he operates the vacuum cleaner for 35 minutes?What If? For what value of (in volts) will the current in the ammeter read 1.59 A?
- An astronaut uses a small motor, rated at 93% efficient, that is connected to a 12-volt [V] power supply on Mars. The motor has a resistance rating of 2.3 kiloohms [kΩ]. How long will it take to produce 3.4 calories [cal] of energy in units of minutes [min]?A rechargeable battery has a capacity of 27090 C of charge. When connected to a 2.52 A DC power supply, how long, in minutes, will it take to charge a fully depleted battery? Do Not Enter Units With Answer.When wiring a natural gas furnace that has nameplate stating that a 20 amp, dedicatedcircuit is required., #12 AWG conductors would supply power to the furnace. TRUE OR FALSE
- A portable coffee heater supplies a potential difference of12.0 V across a Nichrome heating element with a resistanceof 2.00 Ω. (a) Calculate the power consumed by the heater.(b) How many minutes would it take to heat 1.00 kg of coffeefrom 20.0°C to 50.0°C with this heater? Coffee has a specificheat of 4 184 J/(kg ⋅ °C). Neglect any energy losses to theenvironment.A washing machine requires a steady current of 10.0 A. If it is connectedon a 220-V line, (a) how much power does it require and (b) how much isthe electrical bill (cost) of the washing machine per month if it operates1.5h per day and the electric company charges ₱9. 6467 per kWh?0.73 amps flow thru a 15 Ω resistor. How muxh voltage does the resistor use ? How much power is used?
- A 1 150 - W toaster and an 825 - W microwave oven are connectedin parallel to the same 20.0 - A, 120 - V circuit. (a) Findthe toaster’s resistance R . (b) If the microwave fails and isreplaced, what maximum power rating can be used withouttripping the 20.0 - A circuit breaker?Two 3.0 μF capacitors are in series with a resistor of 150 Ω, a battery of15.0 V, and an open switch. What is the time constant of the circuit? Whatis the equation for the current as a function of time?How much does it cost (in ₱) to operate a 670-W split-type inverter air conditioner for 8 in 30 days, if the energy costs ₱9.0/kWh?