A portable compact disc player is designed to play for 2 hours on a fully charged battery pack. If the battery pack provides a total of 180 c of charge how much current does the player use in operating?

Q: A colour- TV set has a power rating of 320 W. How much current does this set draw from a potential…

A: Given data: Power of the TV P=320W Potential difference V=110V

Q: A copper wire has a diameter of 2.072 mm. What magnitude current flows when the drift velocity is…

A:

Q: Two copper wires of diameters 0.260 cm and 0.201 cm, respectively, are connected in parallel. What…

A: Given:      Combined current (i)=18A     first copper wire has diameter 0.260 cm     second copper…

Q: What is the effective resistance of a car's starter motor when 145 A flows through it as the car…

A: The relation between voltage, current and resistance through a conducting medium is, V=IR or, R=VI

Q: Q.6: Given R1=102, R2=152, R3=22N and R4=33N, find the current flowing through resistance wo R4. R1…

A:

Q: In a given fluid, positive ions, each with three excess protons, move towards right at a steady rate…

A: The charge (q1) of the positive ions, that move towards the right, and the charges (q2) of the…

Q: Foolishly trying to fish a burning piece of bread from a toaster with a metal butter knife, a man…

A: Given:  V = 120 V

Q: The wiring in a house must be thick enough so it does not become so hot as to start a fire.  What…

A:

Q: The velocity of electrons with current density 1 unit and a charge density of 4000 nC/m3 is Select…

A: The velocity of electrons with current density 1 unit and a charge density of 4000 nC/m3 is ?

Q: The quantity of charge through a conductor is modeled as Q = 4.00 C/s4t4 − 1.00Cs/t + 6.00 mC . What…

A:

Q: A 5MV battery is connected across a load having a Resistance of 180 KQ. How much current flowing in…

A: Given that the value of voltage and resistance.Then We have to determine the the current flowing in…

Q: In a cathode ray tube, electrons travel across a distance of 19.2 cm. Over this distance, the…

A: Let I be the current, t be the time, e be the charge of an electron and n be the number of…

Q: In a given fluid, positive ions, each with two excess protons, move towards right at a steady rate…

A:

Q: A copper wire has a diameter of 2.222 mm. What magnitude current flows when the drift velocity is…

A:

Q: What is the effective resistance (in Ω) of a car's starter motor when 146 A flows through it as the…

A: The effective resistance of car's starter motor is 0.076 ohm.

Q: The batteries of a submerged non-nuclear submarine supply 1000 A at full speed ahead. How long does…

A: The relation between number of electron and charge of electron is; Q=ne    =(6.02×1023)(1.6×10-19)…

Q: A student examining a flashlight observes that it uses a traditional incandescent light bulb. The…

A: We know, P=VII=PV

Q: A 330-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,120…

A:

Q: The batteries of a submerged non-nuclear submarine supply 1000 A at full speed ahead. How long does…

A:

Q: The electron beam emerging from an accelerator has a circular cross section of radius 1 mm. If the…

A: Let r be the radius of the cross-section of the beam, I be the current, v be the speed. Write the…

Q: What is the current in milliamperes produced by the solar cells of a pocket calculator through which…

A:

Q: 1kn 1.5kO 3kQ 5V 2.2kn 1.7kO Using Kirchhoff's law, find the current and determine its direction…

A:

Q: What is the power of a 1.00×102 MV lightning bolt having a current of 2.00 × 104 A ?

A: Given-         V = 1.00 x 102 MV =1.00 x 108 V          I = 2.00 x 104 A

Q: A portable compact disc player is designed to play for 2.0 h on a fully charged battery pack. If the…

A: Current is defined as the charge crossing a unit area per unit time: I = chargetime The total charge…

Q: n iron wire with cross-section 3,7 * 10-6m2 carries current 168 A. Find the drift velocity Vd, in…

A: Given- Crosssection area  A=3.7×10-6 m2Current I=168 Amolar mass of iron m=55.845 uDensity ρ=7.874…

Q: A heart defibrillator is used to enable the heart to start beating if it has stopped. This is done…

A:

Q: What current flows through a resistor if 1260 C of charge moves through it in 5.0 minutes?

A: Given data: Charge (q) = 1260 C Time (t) = 5.0 minutes Required: Current (I)

Q: What is the effective resistance (in Ω) of a car's starter motor when 142 A flows through it as the…

A: Given data:  Current (I) = 142 A Voltage (V) = 11.0 V Required: Resistance (R)

Q: A current of 0.5 A flows through a fluorescent lamp of resistance 300 Q. The power dissipated on the…

A: The power dissipated is given by P=I2R Here, I is the current and R is the resistance.

Q: In a given fluid, positive ions, each with two excess protons, move towards right at a steady rate…

A:

Q: The body of a snorkeler swimming in salt water has a resistance of about 585 2. If the snorkeler is…

A: Given data:  Voltage (V) = 5.00×102 V Resistance (R) = 585 Ω Required: Current (I) and Power (P)

Q: 9V Can you solve this problem? 1000 150 30Ω 3100 5Ω 408 409 816 818 100 Will the current be less…

A: The Resistors having resistances,                            R1=100ΩR2=15 ΩR3=30 ΩR4=310ΩR5=5 Ω The…

Q: A coil of Nichrome wire is 25.0 m long. The wire has a diameter of .400 mm and is at 20.0C. If it…

A: a)The equation to find electric field using resistivity and current density is,

Q: An MP3 player draws a current of 0.120 ampere from a 3.00-volt battery. What is the total charge…

A: Given data:   Current (I) = 0.120 A Voltage (V) = 3.00 V Time (t) = 900 s Required: Total charge (q)…

Q: A wire is 3 meters long with a cross-sectional are of 4.50 x 10-6 m2. An electrician experienced a…

A:

Q: 2.5 V Battery operates s 14.2 e of 65.3 min. (a) What is the urnished by the battery?

A: Given V=12.5 VR=14.2 Ωt=65.3 min

Q: A man foolishly tries to fish a burning piece of bread from a toaster with a metal butter knife and…

A: Given Data: The voltage is, V=120 V The threshold of sensation current is, I=1 mA   The expression…

Q: In a given fluid, positive ions, each with two excess protons, move towards right at a steady rate…

A:

Q: A lightbulb in a home is emitting light at a rate of 120 watts. If the resistance of the light bulb…

A: Given data:  Power (P) = 120 W Resistance (R) = 15.0 Ω Required: Current (I)

Q: A portable CD player operates with a current of 18 mA at a potential difference of 4.3 V. What is…

A: Given: The current is 18 mA. The potential difference is 4.3 V.

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

A: CONCEPT: We know, Power = potential difference x current So, Power   P=V×I Given, Potential…

Q: A lightning strike generates a current 30,000 A and it takes about 0.024 seconds to travel from the…

A:

Q: .A dead battery is charged by connecting it to the live battery of another car with jumper cables.…

A: Representation for the given circuit (and current flow across it) is as shown below.

Q: A  man owns a canister vacuum cleaner rated at 353 W, 120V. (i). What is the electrical resistance…

A:

Q: The potential difference across a resting neuron in the human body is about 76.0 mV and carries a…

A: The potential difference across a resting neuron in the human body is V = 76.0 mV = 76.0x10-3 V. The…

Q: A calculator draws a current of 0.0002 A for 2 min. How much charge flows through it?

A: The current drawn by the calculator is I = 0.0002A. The time taken is t = 2 min. Assume the charge…

Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.