Electrostatics

[amp_mcq option1=”electric flux” option2=”electric flux density” option3=”magnetic flux density” option4=”electric charge density” correct=”option1″]

Detailed SolutionThe number of Faraday tubes of flux passing through a surface in an electric field is called

[amp_mcq option1=”The leakage resistance of ceramic capacitors is generally high” option2=”The stored energy in a capacitor decreases with reduction in value of capacitance” option3=”The stored energy in a capacitor increases with applied voltage” option4=”A wire cable has distributed capacitance between the conductors” correct=”option1″]

Detailed SolutionWhich of the following statements is incorrect ?

[amp_mcq option1=”36 x 10 fa” option2=”36 x 107 N” option3=”36 x 108 N” option4=”36 x 109 N” correct=”option3″]

Detailed SolutionThe electrostatic force between two charges of one coulomb each and placed at a distance of 0.5 m will be

[amp_mcq option1=”800 uC” option2=”900 uC” option3=”1200 uC” option4=”1600 uC” correct=”option3″]

Detailed SolutionIf a 6 uF capacitor is charged to 200 V, the charge in coulombs will be

[amp_mcq option1=”50″ option2=”100″ option3=”150″ option4=”200″ correct=”option2″]

Detailed SolutionVoltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant ?

[amp_mcq option1=”Electric” option2=”Magnetic” option3=”Both (A) and (B)” option4=”None of the above” correct=”option1″]

Detailed Solution_______ field is associated with the capacitor.

[amp_mcq option1=”Mica capacitor” option2=”Electrolytic capacitor” option3=”Ceramic capacitor” option4=”Paper capacitor” correct=”option2″]

Detailed SolutionWhich of the following capacitors has relatively shorter shelf life ?

[amp_mcq option1=”It will become magnetic” option2=”It will melt” option3=”It will get punctured or cracked” option4=”Its molecular structure will get changed” correct=”option4″]

Detailed SolutionWhat will happen to an insulating medium if voltage more than the breakdown voltage is applied on it ?

[amp_mcq option1=”electrons” option2=”protons” option3=”neutrons” option4=”electric field” correct=”option1″]

Detailed SolutionThe ability of charged bodies to exert force on 6ne another is attributed to the existence of

[amp_mcq option1=”Charged” option2=”Short-circuited” option3=”Lossy” option4=”Satisfactory” correct=”option1″]

Detailed SolutionIf an ohmmeter reading immediately goes practically to zero and stays there, capacitor is