complete answer PHY102: TMA2
Question 1 : The surface integral of the electric field over a surface is called
A. electric field
B. permitivity
C. charge
D. electric flux
Answer to question 1 is A. electric filed
Question 2 : The potential difference between two points B and A is equal to the —————- in taking a unit positive charge from A to B
A. distance dependent
B. force
C. difference
D. Workdone
Answer to question 2 is . D.workdone
Question 3 : For capacitors in parallel, the potential difference across each capacitor is
A. zero
B. shared
C. different
D. the same
Answer to question 3 is D. the same
Question 4 : The electrostatic force is conservative because the workdone in taking a charge round a closed path is
A. one
B. infinite
C. large
D. zero
Answer to question 4is D. Zero
Question 5 : When a dielectric material is subjected to a sufficiently strong electric field, it becomes a
A. capacitor
B. conductor
C. resistor
D. transistor
Answer to question 5 is B. conductor
Question 6 : The work done per unit charge moving from infinity to the point is called
A. universal potential
B. Electric potential
C. zero potential
D. magnetic potential
Answer to question 6 is B. electric potential
Question 7 : The charges on capacitors connected in parallel are in the ratio of their
A. resistivity
B. capacitance
C. effective charge
D. charge
Answer to question 7is B. capacitance
Question 8 : Electric potential is measured in
A. JV
B. J/C
C. JC
D. NC
Answer to question 8 is B. J/C
Question 9 : The work done in taking a unit positive charge from one point to another in electric field is ———— of the path chosen between the two points
A. independent
B. parallel
C. dependent
D. perpendicular
Answer to question 9 is A. independent
Question 10 : The electric field due to an infinite sheet of charge is ———— to the plane of the sheet
A. parallel
B. circular
C. opposite
D. perpendicular
Answer to question 10 is D. perpendicular
Question 11 : When a dielectric material is inserted between the plates of a capacitor it increases its
A. permitivity
B. resistance
C. capacitance
D. charge
Answer to question 11 is C. capacitance
Question 12 : The SI Unit of potential difference is the
A. volt
B. coulomb
C. metre
D. ohm
Answer to question 12 is A. volt
Question 13 : When a positive charge is repelled by another positively charged body its potential energy becomes
A. increased
B. decreased
C. transfered
D. constant
Answer to question 13 is B. decreased
Question 14 : When the charge density at any point depends only on the distance of the point from a central point and not on the direction of the charge distribution is said to be
A. ellipsoidal
B. distance dependent
C. spherically symmetric
D. directionless
Answer to question 14 is B. distance dependent
Question 15 : Which of the following is a device that can store electric charge
A. capacitor
B. voltmeter
C. resistor
D. iron
Answer to question 15 is A. capacitor
Question 16 : For capacitors connected in series each has the same
A. charge
B. wire
C. current
D. potential difference
Answer to question 16 is A. Charge
Question 17 : The energy stored in a system of charges is known as
A. total charge
B. electrostatic potential energy
C. potential energy
D. electrokinetics
Answer to question 17 is B. electrostatic potential energy
Question 18 : The electric field outside a spherically symmetrical shell with radius r and total charge q is directed
A. centrally
B. linearly
C. radially
D. diagonally
Answer to question 18 is C. radially
Question 19 : A body when raised above the earth’s surface is said to acquire
A. weight
B. kinetic energy
C. energy
D. potential energy
Answer to question 19 is B. Kinetic energy
Question 20 : Which of the following is not an example of dielectric material
A. mica
B. glass
C. wood
D. steel
Answer to question is D. steel
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