A copper transmission cable 100 km long and 10.0 cm in diametercarries a current of 125 A. How much electrical energy is dissipated as thermal energy every hour?

Q: The storage battery of a car has an emf of 12V. If the internal resistance of the battery is 0.2 N,…

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Q: A copper transmission cable 43 km long and 5.3 cm in diameter carries a current of 41 A. How much…

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Q: A 0.1-A current flows through of a copper wire of length 1.0 m for 20 minutes. The diameter of the…

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Q: A resistor gains 3 Joules of heat in 30 seconds when a current is sent through it. What is the…

A: Given data:  Gain in Heat Energy (ΔE) = 3 J Time interval (Δt) = 30 s Required: The average power…

Q: If electrical energy costs $0.12 per kilowatt-hour, how much do the following events cost (a) To…

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Q: A certain brand of hotdog cooker works by applying a potential difference of 120V across opposite…

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Q: A 220V 600-watt electric coffee maker is used to make a total of 10 cups of coffee in 45 minutes.…

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Q: A certain brand of hotdog cooker works by applying a potential difference of 129 V across opposite…

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Q: The following results are for five cells in series. The e.m.f. of the five cells together is 6.9 V.…

A: E = 6.9 V  V = 3.3 V  R = 2.2 ohm I =1.5 A

Q: A certain brand of hotdog cooker works by applying a potential difference of 133 V across opposite…

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Q: A proton beam in an accelerator carries a current of 125 μA. If the beam is incident on a target,…

A: Current is defined as the flow of charges. Whenever there is a motion of charged particles there…

Q: A 14-gauge copper wire has a diameter of 1.88 mm. (a) What magnitude current flows when the drift…

A: a) Calculate the cross-sectional area of the wire. A=π4d2A=π4(1.88 mm×1 m1000 mm)2A=2.776×10−6 m2

Q: energy in kilojoules does the device produce

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Q: If electrical energy costs $0.12 per kilowatt-hour, how much do the following events cost? (a) To…

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Q: What is the power in watts of a 2.05 ✕ 102 MV lightning bolt having a current of 1.95 ✕ 104 A?

A: The power = Voltage × current.  Or,  P= V×I

Q: A coil of Nichrome wire is 25.0 m long. The wire has a diameter of 0.400 mm and is at 20.0°C. If it…

A: (a) The magnitude of electric field in wire The resistivity in the Nichrome wire is 10 to power (-6)…

Q: of decorative outdoor lights is left on for 12.0 h. The lights draw a current of 2.00 A, and run on…

A: Given  Time t  = 12 h = 12×60 × 60 =  43200 sec  Current I = 2 A  Potential difference V = 120 V

Q: Currents up to 30 A can be carried by 10 gauge copper wire. (a) What is the resistance of 80 m of 10…

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Q: A 60-cm-long heating wire is connected to a 120 V outlet. If the wire dissipates 45 W, what are (a)…

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Q: A proton beam in an accelerator carries a current of 140 µA. If the beam is incident on a target,…

A: Given : Current=I=140 μA Time=t=25 s

Q: Electrons in an x-ray tube are accelerated through 134 kV and directed toward a target to produce…

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Q: What is the power in watts of a 2.40 ✕ 102 MV lightning bolt having a current of 1.87 ✕ 104 A?

A: Given,Vo=2.4*102MV or 2.4×108VoltsIo=1.87×104A

Q: An electric car is designed to run off a bank of 12.0-V bat- teries with total energy storage of…

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Q: Electrons in an X-ray tube are accelerated through 1.00×102 kV and directed toward a target to…

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Q: Thermal energy is produced in a resistor at a rate of 112 W when the current is 3.63 A. What is the…

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Q: an electric water heater conects to a 120.0 V supply. It consumes energy at the rate of 1500 j/ s In…

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Q: In the evening, the student turns on a 38-W table lamp, plugs in a 167-W computer to study physics,…

A: Power of lamp is Power of computer is Power of coffee maker is Note:The voltage in household…

Q: What is the power in watts of a 2.05 X 102 MV lightning bolt having a current of 1.73 X 104 A?

A: Given that:- Lightning bolt having potential,  V=2.05×102MV=2.05×108 VoltCurrent, I=1.73×104A

Q: a copper wire is 2.50 m long and has a diameter of 2.5 mm. how much current will it draw when…

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