Q. For which of the following parameter variation, the capacitance of the capacitor remains unaffected ? Distance between platesArea of the platesNature of dielectricThickness of the plates Answer: Thickness of the plates

Q. Three capacitors each of the capacity C are given. The resultant capacity C can be obtained by using them all in seriesall in paralleltwo in parallel and third in series with this combinationtwo in series and third in parallel across this combination Answer: two in parallel and third in ...

Q. “The total electric flux through any closed surface surrounding charges is equal to the amount oflcharge enclosed”. The above statement is associated with Coulomb’s square lawGauss’s lawMaxwell’s first lawMaxwell’s second law Answer: Gauss’s law

Q. The lines of force due to charged particles are always straightalways curvedsometimes curvednone of the above Answer: always curved

Q. Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant ? 50100150200 Answer: 100

Q. The electric field at a point situated at a distance d from straight charged conductor is proportional to dinversely proportional to dinversely proportional to dnone of the above Answer: inversely proportional to d

Q. A field line and an equipotential surface are always parallelalways at 90°inclined at any angle 0none of the above Answer: always at 90°

Q. The electric field intensity at a point situated 4 meters from a point charge is 200 N/C. If the distance is reduced to 2 meters, the field intensity will be 400 N/C600 N/C800 N/C1200 N/C Answer: 800 N/C

Q. A dielectric material must be resistorinsulatorgood conductorsemi conductor Answer: insulator

Q. If three 10 uF capacitors are connected in parallel, the net cararitance is 20 uF30 uE40 uF50 uF Answer: 30 uE