Q.10 Write any 5 precautions to be taken to work in an electrical laboratory.
Q: If a charge is placed outside a closed surface, flux due to that charge inside the surface will be _...
A: D
Q: we can hear a beat frequency of 2Hz from two tuning forks. The first tuning fork has a frequency of ...
A: As the initial beat frequency is 2Hz, the 2nd tuning fork can have a frequency of 98Hz or 102Hz. Whe...
Q: What is the reciprocal of resistance of a material called? Give its unit.a) Conductance, ohm-1b) Con...
A: A
Q: What is the total work done on moving a test charge on an equipotential surface? a) Maximum b) Minim...
A: A
Q: Dr. Gilbert tried to hold a brass rod by hand and induce static electricity in it by friction. Why d...
A: B
Q: What is the reciprocal of resistance of a material called? Give its unit. a) Conductance, ohm-1 b) C...
A: A
Q: wave having an amplitude of 3cm is to be superimposed with another wave of the same amplitude. What ...
A: B
Q: 3. Find the values of I and V in the circuits shown below. +5 V 2.5 kn NIVERSS
A: Given, A circuit with a resister and diode in forward biased
Q: Two point charges 10C and -10C are placed at a certain distance. What is the electric potential of t...
A: C
Q: Flux linked to a surface is said to be positive if the flux lines are coming out of the surface. The...
A: A
Q: 26.(a) Derive a relativistically correct formula that gives the de Broglie wavelength of a charged p...
A: We know that the formula for the de brogalie wavelength is given byλ = hm Vλ = h12mv2 2mwhere...
Q: What is the dimension of volume charge density? a) [MLAT-2] b) [M0 L-3 A T] c) [M L-3 A T] d) [M L-2...
A: B
Q: What is progressive waves
A: A wave which travels continuously in a medium in the same direction without the change in its amplit...
Q: Electric flux coming out of a single Na+ ion is _________ Nm2C-1 a) 1.8*10-8 b) 1.8*10-10 c) 5.4*10-...
A: A
Q: Superconductors have __________ a) Almost zero resistivity b) Very high resistivity c) Temperature-d...
A: A
Q: spring mass system is on a horizontal plane. Spring constant is 2N/m & mass of block is 2kg. The...
A: B
Q: True power of a capacitor is 1. a) True b) False
A: B
Q: Find the center of gravity of the region bounded by the x-axis, the curve y = sec x, and the lines x...
A: Given: Let the position of the center of the mass of the given figure be at (x¯,y¯) Due to symmetry...
Q: Which of the following describes circular motion? a) Periodic b) Oscillatory c) Simple Harmonic d) R...
A: C
Q: Which among the following cannot be the charge of a charged body? a) 4.8*10-14 Coulomb b) 6.4*10-15 ...
A: D
Q: An electric dipole is placed inside a cube. What will be the nature of electric flux from the cube s...
A: C
Q: Calculate electric potential due to a point charge of 10C at a distance of 8cm away from the charge....
A: B
Q: What will happen to the time period of a simple pendulum if temperature of the surroundings is signi...
A: A
Q: pipe is open at both ends. What should be its length such that it resonates a 10Hz source in the 2nd...
A: As
Q: If a charged body is moved in an electric field against the Coulomb force, then ________ a) Work is ...
A: The work done is defined as the product of the force applied on an object and the displacement on th...
Q: b) If a mass mis placed at the end of a spring, and if the mass is pulled downward and released, the...
A: Given: y=c1cos ωt+c2 sin ωt The set functions are c1cos ωt and c2cos ωt. If u=c1cos ωt and v=c2 sin ...
Q: In the inner region between the two capacitor plates, the electric fields due to the two charged pla...
A: B
Q: Electric field intensity and electric potential at a certain distance from a point charge is 32 N/C ...
A: B
Q: Two simple pendulums of the same length are released from 10° & 20° respectively. Select the cor...
A: B
Q: Gauss’s Law cannot be applied in ________ a) Hollow sphere b) Solid sphere c) Cube d) Unbounded surf...
A: d
Q: In superposition of waves the displacements get added like vectors. True or False? a) True b) False
A: A
Q: The band gap between the valence band and conduction band is the measure of ______ a) The conductivi...
A: Correct Answer- a) The conductivity of the material
Q: Give the SI unit of current density and its dimensional formula.a) Am-2, [A1L-2]b) Am2, [A1L2]c) Am-...
A: A
Q: Which of these is a correct definition of conventional current? a) Current that flows from lower pot...
A: D
Q: In a parallel plate capacitor, the capacitance increases from 100 F to 800 F, on introducing a diele...
A: D
Q: The direction of electric field created by a negative charge is ___________ a) Directed outwards b) ...
A: B answer
Q: If a charge is placed outside a closed surface, flux due to that charge inside the surface will be _...
A: If a charge is placed outside a closed surface, flux due to that charge inside the surface will be z...
Q: Coulomb’s Law is valid for any distance between the particles. a) False b) True
A: A
Q: Resonance occurs when frequency of forced oscillations is close to natural frequency. True or False?...
A: A
Q: both the source of sound and observer are moving, the apparent frequency will be different from the ...
A: B
Q: A 1.5-mm-long, 0.55 mg flea can reach a height of 17 cm in a single leap. Ignoring air drag, what is...
A: Given: The length of the flea l = 1.5 mm. The mass of the flea m = 0.55 mg. The height covered by t...
Q: What is the relation between work obtained in an reversible and irreversible process? a) Wrev > W...
A: A
Q: Four charges are kept at the corner points of a square. The net force on a charge kept at the center...
A: D
Q: Which one of the following is similar between electrostatic force and gravitational force? a) Force ...
A: Introduction: The gravitational force between two objects is directly proportional to the product of...
Q: Looking at the image below, find the displacement using A.) unit vector notation and B.) magnitude a...
A: Given :
Q: Pick out the expression for energy stored in a capacitor from the following. a) U = 2CV2 b) U = \fra...
A: Work done in charging a capacitor gets stored in the capacitor in the form of its electric potential...
Q: What is the C.G.S. unit of charge
A: The C.G.S. unit of charge is Stat Coulomb or ESU but in the SI system the unit is Coulomb. EMU is an...
Q: Four charges are kept at the corner points of a square. The net force on a charge kept at the center...
A: D
Q: engine uses 30 A of current. The resistance offered is 15 ohms. Calculate the power consumed by the ...
A: A
Q: Which of the following is not a valid reason for using alloys to make standard resistors? a) Alloys ...
A: C
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