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The force between two charges is 120 N. If the distance between the charges is doubled,the force will beThe force between two charges is 120 N. If the distance between the charges is doubled,the force will be
The answer is:
B. 30 N


The electric field intensity at a point situated 4 metres from a point charge is 200 N/C. Ifthe distance is reduced to 2 metres, the field intensity will beThe electric field intensity at a point situated 4 metres from a point charge is 200 N/C. Ifthe distance is reduced to 2 metres, the field intensity will be
The answer is:
C. 800 N/C


The lines of force due to charged particles areThe lines of force due to charged particles are
The answer is:
B. always curved


The electric field at a point situated at a distance d from straight charged conductor isThe electric field at a point situated at a distance d from straight charged conductor is
The answer is:
C. inversely proportional to d


The direction of electric field due +0 positive charge isThe direction of electric field due +0 positive charge is .
The answer is:
A. away from the charge


A field line and an equipotential surface areA field line and an equipotential surface are
The answer is:
B. always at 90°


The ability of charged bodies to exert force on 6ne another is attributed to the existenceofThe ability of charged bodies to exert force on 6ne another is attributed to the existenceofa
The answer is:
D. electric field


If the sheet of a bakelite is inserted between the plates of an air capacitor, thecapacitance willIf the sheet of a bakelite is inserted between the plates of an air capacitor, thecapacitance will
The answer is:
B. increase


A capacitor stores 0.24 coulombs at 10 volts. Its capacitance isA capacitor stores 0.24 coulombs at 10 volts. Its capacitance is
The answer is:
A. 0.024 F


For making a capacitor, it is better to select a dielectric havingFor making a capacitor, it is better to select a dielectric having
The answer is:
B. high permittivity


The units of capacitance areThe units of capacitance are
The answer is:
B. coulombs/volt


If three 15 uF capacitors are connected in series, the net capacitance isIf three 15 uF capacitors are connected in series, the net capacitance is
The answer is:
A. 5 uF


If three 10 uF capacitors are connected in parallel, the net cararitance isIf three 10 uF capacitors are connected in parallel, the net cararitance is
The answer is:
B. 30 uE


A dielectric material must beA dielectric material must be
The answer is:
B. insulator


An electrolytic capacitor can be used forAn electrolytic capacitor can be used for
The answer is:
A. D.C. only


The capacitance of a capacitor is not affected byThe capacitance of a capacitor is not affected by
The answer is:
C. thickness of plates


Which of the following is not a vector ?Which of the following is not a vector ?
The answer is:
B. Angular momentum


Two plates of a parallel plate capacitor after being charged from a constant voltagesource are separated apart by means of insulated handles, then theTwo plates of a parallel plate capacitor after being charged from a constant voltagesource are separated apart by means of insulated handles, then the
The answer is:
B. voltage across the plates decreases


If A.C. voltage is applied to capacitive circuit, the alternating current can flow in thecircuit becauseIf A.C. voltage is applied to capacitive circuit, the alternating current can flow in thecircuit because
The answer is:
A. varying voltage produces the charg¬ing and dicharging currents


Voltage applied across a ceramic dielectric produces an electrolytic field 100 timesgreater than air. What will be the value of dielectric constant ?Voltage applied across a ceramic dielectric produces an electrolytic field 100 timesgreater than air. What will be the value of dielectric constant ?
The answer is:
B. 100

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