Questions
21
Charge on capacitor plates is directly proportional to
Answer: electric field intensity
22
If the distance between the two point charges become half then force between them becomes
Answer: four times
24
Electric field due to positive charged plate is E = ?/2??. If oppositely charged plate of same amount is placed parallel to it, then resultant field contains amount of energy
Answer: Q2/C
25
If two charges are increased by two times then force
Answer: Increases 4 times
26
In equation Q=CV, C is constant of proportionality called capacitor's
Answer: capacitance
27
In equation Q=CV, C is constant of proportionality called capacitor's
Answer: power
28
Capacitance of a capacitor is 100μF and potential difference between plates is 50 volts then charge stored on each plate is
Answer: 5 mC
30
For what value of ? the electric flux has average value of those of extreme values ?
Answer: 60?
31
Electric force between two point charges in air or vacuum is F. If we replace air or vacuum by an insulator (dielectric) of relative permitivity Cr the force between the charges will
Answer: decrease
33
3 capacitors with capacitances 5µF, 6µF and 7µF are arranged in parallel combination with a battery of 5V, as 1µF = 10-6F, voltage across each capacitor is
Answer: 5V
35
Tick the only wrong statement.
Answer: an electrically neutral body is repelled both positively and negatively charged bodies
37
If metallic conductor is charged negatively then its weight
Answer: Increases for a while
39
Coulomb's law is only true for point charges whose sizes are
Answer: very small
40
In combination of capacitors in series, capacitors are connected
Answer: side by side
