A power transmission line is hung from metal towers with glass insulators having a resistance of 4.90 ✕ 109 Ω. What current (in mA) flows through the insulator if the voltage is 320 kV? (Some high-voltage lines are DC.)

Q: If the 0.185 mm diameter tungsten filament in a light bulb is to have a resistance of 0.103 Ω at…

A: Given data:   Diameter (d) = 0.185 mm = 0.185×10-3 m Resistance (R) = 0.103 Ω Resistivity (ρ) =…

Q: A real battery with emf 12.4 V and internal resistance 2.90 Ω is connected to a resistance of 5.35…

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Q: A light bulb is connected to a 120.0-V wall socket. The current (in Amperes) in the bulb depends on…

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Q: What is the resistance of resistor C?

A: Given, Current,I=3 A, IB=1 A Voltage,VA=2 V,VD=4 V,V=9 V

Q: Three wires of the same diameter and length are made from three different metals: copper (ρ = 1.7 ×…

A: Given data:  The length and diameter of three wires are same The resistivity of materials ρcu = 1.7…

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

A: Power is product of current and potential . P=IV       .....1 where I is current            V is…

Q: A 1520-W hair dryer plugs into a 120-V outlet. What is the current through the hair dryer when it…

A: Power of hair dryer (P) = 1520 W Voltage (V) = 120 volts

Q: A battery of 9V is connected in series with resistors of 0.2Ω, 0.3Ω, 0.4Ω ,0.5Ω and 12 Ω,…

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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: Problem 20.03. For the following circuit, assume the battery has some internal resistance such that…

A: Given ε=20.0 V (emf of battery)R1=5*103ΩI1=3.60*10-3 A Cell equation is given by  VT=ε-Irr=ε-VTI

Q: A person with body resistance between his hands of10 kΩ accidentally grasps the terminals of a 14 kV…

A: Given data: The resistance is R=10 kΩ. The voltage is V=14 kV. The internal resistance is r=2000 Ω.

Q: voltage drop across the 4 ohm

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Q: A lamp is connected to a 120 V line. When the switch is first turned on and the filament is cold,…

A: Given data The voltage to which lamp is connected is given as V = 120 V. The Current flowing…

Q: A 2.0 cm long tungsten filament in a florescent light bulb has a radius of 0.3 mm. Assume constant…

A: A 2.0 cm long tungsten filament in a florescent light bulb has a radius of 0.3 mm. cross sectional…

Q: A 100 W lightbulb is plugged into a standard 120 V outlet. (a) What is the resistance of the bulb?…

A: Power of the lightbulb is P=100 W. Supply voltage is V=120 V.   If R be the resistance of the…

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

A: Solution: The current flow through the insulator can be obtained by using Ohm's law. Ohm's law is…

Q: If the 0.140 mm diameter tungsten filament in a light bulb is to have a resistance of 0.290 Ω at…

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Q: Two resistors, 60.7 and 68.3Ω, are connected in parallel. The current through the 68.3-Ω resistor is…

A: Given value--- Two resistors, 60.7 and 68.3Ω, are connected in parallel.  The current through the…

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: A high-voltage electricity transmission line is hung from metal towers with glass insulators having…

A: Given Resistance of wire = 0.85 × 109 Ω  Applied voltage = 180 kV We have to calculate the current

Q: If the 0.100-mm diameter tungsten filament in a light bulb is to have a resistance of 0.200 Ω at…

A: Given - Diameter of tungsten filament ,d = 0.100 mm =0.100 x 10-3 m  Resistance of tungsten…

Q: A 16.27 Ω resistor is connected to a battery that has an internal resistance of 0.76 Ω.  If the…

A: The expression for current through the resistor, I=∆VRI=11.08V16.27ΩI=0.68A

Q: If the 0.130 mm diameter tungsten filament in a light bulb is to have a resistance of 0.100 Ω at…

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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: Choose the correct Answer? Q1: The length of copper wire with diameter (1mm), have a resistance of…

A: We know that the resistance of a wire of length L, cross section area A and resistivity ρ, is given…

Q: The potential difference across a resting neuron in the human body is about 75.0 mV and carries a…

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Q: Two resistors, 46.2 and 56.6Ω, are connected in parallel. The current through the 56.6-Ω resistor is…

A: In parallel combination voltage across each resistance remains same.

Q: A rear window defroster consists of a long, flat wire bonded to the inside surface of the window.…

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Q: ne wire in a high-voltage transmission line carries 1 000 A starting at 460 kV for a distance of 250…

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Q: A capacitor and a resistor are connected in parallel to a 120-V, 60-Hz line. The resistor has a…

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Q: A human being can be electrocuted if a current as small as 53.0 mA passes near the heart. An…

A: This question is based on Current Electricity Topic. According to Ohm's Law the relation between…

Q: the 0.145 mm diameter tungsten filament in a light bulb is to have a resistance of 0.185 Ω at…

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Q: Examine the following data table of a terminal's voltage vs current. Estimate the internal…

A: Required concept: We have the relation, V=E-rIwhich can be written as,V=-rI+E…

Q: If the 0.180 mm diameter tungsten filament in a light bulb is to have a resistance of 0.176 Ω at…

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Q: A common flashlight bulb is rated at 0.30 A and 2.9 V (the values of the current and voltage under…

A: Given V at Operating temperature- 2.9V Current at Operating temp- 0.30A R1 = Resistance at room…

Q: A wind farm generates 2,286 kW of electrical power for a nearby community.  The transmission wires…

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Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.