PHY101 Lecture-wise MCQs Lectures 22-45 by Najam Ahmed

Solved By: Najam Ahmed

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Phy101 mcqs 22 to 45 lecture wise by Najam Ahmed

Lecture 22

the force of attraction or repulsion acting along a straight line between two electric charges is directly proportional to the product of the charges and inversely to the square of the distance between them is called: Ohm law Columb’s law check this Ainstain law

The constant of proportionality will take different values depending upon the: Law Mass quantity units pg#61 MKS system, charge is measured in: Ohm law Columb pg#61 Ainstain law Charge is quantized. This means that charge comes in ………..unit/s: Certain pg#61 One Two Three charge is never: created or destroyed created destroyed created or destroyed both pg#61 the total charge at an earlier time is equal to the charge at a later time pg#61

The electric field is also an example of a vector field pg#62 Scalar field

None It is easy to find the torque experienced by an electric dipole that is placed in a uniform electric field True pg#63 false

Lecture 23

when charges are continuously distributed over some region of space, For this, we need to break up the region into little pieces to calculate: magnetic field both electric field pg#64

The …………… of any vector field is a particularly important concept. Flux pg#65 Point Direction Magnitude ……………….is the measure of the "flow" or penetration of the field vectors through an imaginary fixed surface Flux pg#65 Point Direction Magnitude

Lecture 24

The electric potential (or simply potential) is the energy of a unit charge in an: electric field pg#68

both none Potentials are more positive in regions which have more positive charge. True pg#68 False