The SI unit of self-inductance is Henry which can be expressed as a)volt s amp
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A physical quantity is measured and the result is expressed as nu where u is the unit used and n is the numerical value?
(d) If the result is expressed in various units then n ∝ 1/u.
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Define self-inductance of a coil. Write its SI units.
The self inductance is defined on the magnetic flux linked with the coil when unit current flows through it. Or The self inductance is defined as the emf induced in the coil,...
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Derive the expression for the self inductance of a long solenoid of cross sectional area A and length l, having n turns per unit length.
Magnetic field inside the solenoid B =μ0nI n → number of turns per unit length, I → current flowing, ϕ' = Magnetic field through each turn = BA = μ0nIA Total magnetic flux linked...
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Ejection of photo electron from silver metal can be stopped by applying a voltage of 0.35 volt, when radiation of wave length of 256.7 x 10^-9
Energy of incident radiation= hc/ ʎ Put the values =7.74 x 10-19 J =7.74 x 10-19 x 1.602 x 10-19 = 4.83 eV W0 = E- KE =4.83 - 0.35 =4.48 eV
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A 741type op-amp has a gain-bandwidth product of 1MHz.
correct answer is (b) 100kHz.
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Unit of electric power may also be expressed as
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The calorific value of a fuel is expressed in a unit called (a) kilojoule per litre
(d) kilojoule per kilogram
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The self inductance L of a solenoid of length l and area of cross section A, with a fixed number of turns N increases as
(b) l decreases and A increases.
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If the unit of force is 100 N, unit of length is 10 m and unit of time is 100 s, what is the unit of mass in this system of units?
The unit of mass in this system of units- 105 kg
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A new system of units is proposed in which unit of mass is α kg, unit of length β m and unit of time γ s.
Since energy has dimensions of ML2 T–2, 1J in new units becomes γ2/αβ2J. Hence 5J becomes 5γ2/αβ2 .
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