Obtain expressions for average current and root mean square curre… - Vidyadip

Question

Obtain expressions for average current and root mean square current for a complete cycle in ac circuit.###Obtain root mean square value of current for one complete cycle of current $I=I_0 \sin \omega t$. Draw graph between instantaneous value and root mean square value of current for two complete cycles.###Obtain rms value of alternating current for a complete cycle of sinusoidal current.$I = I _0 \sin \omega t .$

✓

Answer

SELF

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "5 Marks Questions" from Alternating Current→Alternating Current — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

A charge Q is placed at the centre of an uncharged, hollow metallic sphere of radius a:

Find the surface charge density on the inner surface and on the outer surface.
If a charge q is put on the sphere, what would be the surface charge densities on the inner and the outer surfaces?
Find the electric field inside the sphere at a distance x from the centre in the situations (a) and (b).

A $5\ mm$ high pin is placed at a distance of $15\ cm$ from a convex lens of focal length $10\ cm$. A second lens of focal length 5\ cm is placed $40\ cm$ from the first lens and $55\ cm$ from the pin. Find

The position of the final image.
Its nature.
Its size.

In a Young's double slit experiment, the separation between the slits $= 2.0\ mm,$ the wavelength of the light $= 600\ nm$ and the distance of the screen from the slits $= 2.0m$. If the intensity at the centre of the central maximum is $0.20\ W/ m^2,$ what will be the intensity at a point $0.5\ cm$ away from this centre along the width of the fringes?

$a$ . Derive an expression for the potential energy of an electric dipole in a uniform electric field. Explain conditions for stable and unstable equilibrium.
$b$ . Is the electrostatic potential necessarily zero at a point where the electric field is zero? Give an example to support your answer.

$^{238}U$ decays to $^{206}Pb$ with a half-life of $4.47 \times 10^9y.$ This happens in a number of steps. Can you justify a single half for this chain of processes? A sample of rock is found to contain $2.00\ mg$ of $^{238}U$ and $0.600\ mg$ of $^{206}Pb.$ Assuming that all the lead has come from uranium, find the life of the rock.

Define resonance. Explain resonant frequency and write characteristics of resonant circuit.

A ball is dropped from a height of $5m$ onto a sandy floor and penetrates the sand up to $10\ cm$ before coming to rest. Find the retardation of the ball in sand assuming it to be uniform.

Draw a graph between angle of deviation '$\delta$' and angle of incidence i for a prism showing the variation of $\delta$ with i.
Show for a prism that the refractive index n is given by :
$n=\frac{\sin \left[\left(\frac{A+\delta_m}{2}\right)\right]}{\sin (A / 2)}$
where symbols have their usual meanings.

Consider the situation shown in figure. The switch S is open for a long time and then closed:

Find the charge flown through the battery when the switch S is closed.
Find the work done by the battery.
Find the change in energy stored in the capacitors.
Find the heat developed in the system.

A system has two charges $q_A = 2.5 \times 10^{-7} C$ and $q_B = –2.5 \times 10^{-7} C$ located at points $A: (0, 0, –15 \ cm)$ and $B: (0, 0, +15 \ cm),$ respectively. What are the total charge and electric dipole moment of the system?