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Physics with Akhtiar Ali Bullo
  • 1/12/2025
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Which physical quantities posses same units and dimensions_Names of physical quantities having same units and dimensions
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A 40Ω resistor is to be wound from platinum wire 0.1mm in diameter.How much wire is needed ? Given ( ρ = 11×10⁻⁸ Ωm )
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Can charge reside without mass ?
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Resistors of 20Ω,40Ω and 50Ω are connected in parallel across a 50V power source.Find the equivalent resistance of the set and the current in each resistor ?
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A battery of 24V is connected to a 10Ω load and a current of 2.2A flows.Find the internal resistance of the battery and its terminal voltage
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A source of what potential difference is needed to charge a battery of 20V emf and internal resistance of 0.1Ω at a rate of 70A
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Currents of 3A and 1.5A flow through two wires , one that has a potential difference of 60V across its ends and another that has a potential difference of 120V across its ends. Compare the rate at which energy pass through each wire
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A current of 6A is drawn from a 120V line,What power is being developed ? How much energy in joule and in kilowatt hour is expended if the current is drawn steadily for one week
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Why electric potential is scalar quantity?
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A silver wire 2m long is to have a resistance of 0.5Ω.what should its diameter be ? Given (ρ=1.52×10^-8Ωm)
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A certain battery is rated at 80 ampere hour.How many coulomb of charge can this battery supply ?
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A woman with a mass of 45kg is standing on a scale in an elevator.The elevator accelerates upward with a constant acceleration of 1.2ms⁻².What is the woman's weight as measured by her in the elevator ?
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Determine the gravitational attraction between the proton and the electron in a hydrogen atom,assuming that the electron describes a circular orbit with a radius of 0.53×10⁻¹⁰ m.mass of electron=9.1×10⁻³¹ kg,mass of proton=1.67×10⁻²⁷ kg
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Compute the gravitational attraction between two college students of mass 80 and 50kg respectively, 2m apart from each other.Is this force worth worrying about?
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Why potential energy (P.E) is scalar quantity ?
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At what distance from the centre of the earth does the gravitational acceleration have one half the value that it has on the earth's surface ?
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What is linear density or mass per unit length
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What is the value of the gravitational acceleration at a distance of 1) earth's radius above the earth's surface 2) Twice earth's radius above the earth's surface
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