Electric Circuits Answers

A parallel plate capacitor is given a charge of 5x10-8C. The space between the plates is filled with dielectric having a permittivity of 5.43x10-11F/m and the electric field within the dielectric is 5.81x106V/m. What is its plate area?

If P and V are the power and potential of device,

the power consumed with a supply potential V

is

Calculate electric field at a distance of 40 cm from the centre of sphere of radius 15 cm 

carries a charge of 1.6 µc 

How to draw a circuit diagram

An inductor of 250 mH has a reactance of 1450 Ω. What is the frequency of the current in the inductor?

Two positive charges of 12×10-10C and 8×10-10C are placed 10cm apart find the work done in bringing the charges 4cm closer

If the potential difference is applied across a resistor of length l and diameter d .if the diameter will halfed then the V will be

Let two cylindrical conductors connected in parallel, to which potential difference V=170V is applied. The two conductors are made of the same material as the first is 6 times the length of the second and 1/5 the radius of the second. The resistance of the second is 469 ohms. Determine the equivalent resistance

Which of these is NOT found in your phone's battery?

graphite

lithium

cobalt

oxygen

hexafluorophosphate

carbon

copper

aluminum

zinc

The value of resistance in an oscillating LCR Circuit is

1)R≤2 √(L/C)

2)R≥2 √(L/C)

3)R<2 √(L/C)

4) R>2 √(L/C)