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What materials are diamagnetic?

Recent questions and answers in Capacitor

1 answer 45 views

The reactance offered by a capacitor to an alternating current of frequency 50 Hz is 10 ohm. If frequency is increased to 100 Hz, the reactance will be (a) 2.5 ohm (b) 5.0 ohm (c) 20.0 ohm (d) 40.0 ohm 

answered Oct 18, 2018 in Capacitor
2 answers 26 views

How will the total capacitance change, when two capacitors are connected in parallel?

answered Aug 14, 2018 in Capacitor
1 answer 43 views

A capacitor used for power factor correction in single phase circuit decreases: (1) Power factor (2) Line current (3) Both line current and p.f. (4) The line current and increases p.f. 

answered May 29, 2018 in Capacitor
0 answers 20 views

Which of the following capacitors are used in D.C. circuits ? (a) Mica (b) Air (c) Ceramic (d) Electrolytic 

asked May 25, 2018 in Capacitor
0 answers 48 views

Piezoelectric effect is generally observed in (a) conductors and super conductors (b) conductors and semi conductors (c) insulators (d) insulators and conductors

asked May 25, 2018 in Capacitor
0 answers 13 views

In a parallel plate capacitor of capacitance Co, the electric field is E. If a dielectric slab with dielectric constant = 7 is introduced to fill capacitor completely, the electric field will become (a) 7E (b) E/7 (c) E/3.5 (d) E. Co 

asked May 25, 2018 in Capacitor
1 answer 7 views

A capacitor opposes:

answered May 22, 2018 in Capacitor
1 answer 25 views

If the output filter capacitor in a power supply actually had a value twice its stated value, which of the following symptoms would be found?   a. The output voltage would be doubled and a small improvement in the ripple voltage would be detected.  b. The ripple voltage would be half of what is expected and a ... output voltage would be detected.  c. The output and ripple voltage would be greater than expected.  d. The output and ripple voltage would be less than expected.

answered May 17, 2018 in Capacitor
1 answer 66 views

For a parallel plate capacitor which is being charged out of the following the incorrect statement is   (A) Energy stored in the capacitor does not enter it through the connecting wire through the space around the wires and plates of capacitor.   (B) Rate at which energy flows into this volume is equal ... poynting vector points everywhere radially outward of the volume between plates.   (D) The poynting vector points everywhere radially in to the volume between the plates.

answered May 16, 2018 in Capacitor
1 answer 23 views

Modern capacitors which have high capacitance in small size use a dielectric of   (A) paper (B) rubber (C) ceramic (D) Mylar

answered May 16, 2018 in Capacitor
1 answer 9 views

Equivalent capacitance ‘C’ of a system of capacitors C1,C2,C3 connected in parallel is

answered May 15, 2018 in Capacitor
1 answer 7 views

The capacitance of the capacitor is directly proportional to the

answered May 15, 2018 in Capacitor
1 answer 16 views

A capacitor of capacitance 50 micro farads is charged to a potential difference of 200 Volts. Find out energy stored in the condenser?

answered May 14, 2018 in Capacitor
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