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Electric Circuits
Consider the circuit shown in the figure. Find the charge on capacitor C between A and D in steady state :-
http://www.onlinetestseries.in/data/images/common/papers/partners/32/1321/image069.png
http://www.onlinetestseries.in/data/images/common/papers/partners/32/1321/image069.png
Electric Circuits
1.two insulating small spheres are rubbed against each other and are kept at a distance of 4m apart.If they attract each other with a force 3.5N then calculate charge on each sphere and number of electrons transferred from 1 sphere to another during rubbing?
2.what do you mean by superposition principle?
3.could you mention the cases of equilibrium due to charge
2.what do you mean by superposition principle?
3.could you mention the cases of equilibrium due to charge
Electric Circuits
Calculate effective resistance between P and Q in this IMAGE: http://www.avnitutorials.com/_/rsrc/1379957514179/sample-papers/class-10/summative-assessment--1/science/sample-paper--2/q16.JPG
Electric Circuits
The potential difference V and the current i flowing through an instrument in an ac circuit of frequency f are given by V = 5 cos t volts and I = 2 sin t amperes (where = 2f). The power dissipated in the instrument is -
(1)Zero
(2)10 W
(3)5 W
(4)2.5 W
(1)Zero
(2)10 W
(3)5 W
(4)2.5 W
Electric Circuits
Calculate mutual inductance between two circuits within a connector, from this estimates the amount of crosstalk caused by the connector compared to when no connector was used?
Spec
There are two Printed Circuit Boards separated by 10.16mm and the two
tracks are now taken through a connector which bridges the gap. As well as the two signal pins,
which are the same size as the tracks, there is an Earth pin which is centrally placed and which is
connected to the ground planes through via holes.
Length of tracks 143mm
width 1.78mm
height 3.0mm
dielectric constant 4
minimum trace separation 5.08mm
signal voltage 3v
signal rise/fall 100ps
receiver load cap 1pF
Spec
There are two Printed Circuit Boards separated by 10.16mm and the two
tracks are now taken through a connector which bridges the gap. As well as the two signal pins,
which are the same size as the tracks, there is an Earth pin which is centrally placed and which is
connected to the ground planes through via holes.
Length of tracks 143mm
width 1.78mm
height 3.0mm
dielectric constant 4
minimum trace separation 5.08mm
signal voltage 3v
signal rise/fall 100ps
receiver load cap 1pF
Electric Circuits
The force between two point charges in air is 100N .Calculate the force if the distance between them is increased by 50% .
Electric Circuits
A dry cell of emf 1.6 V and internal resistance 0.10 Ω is connected to a resistor of resistance R Ω. If the current drawn from the cell is 2 A (i) What is the voltage drop across R? (ii) What is the energy dissipation in the resistor?
Electric Circuits
Calculate the electric power which must be supplied to the filament of of a light bulb operating at 3000K. The total surface area of the filament is
8×10−6m2 and its emissivity is 0.92.
20.3W
33.8W
46.4W
56.7W
8×10−6m2 and its emissivity is 0.92.
20.3W
33.8W
46.4W
56.7W
Electric Circuits
In L-C oscillation charge in capacitor is maximum at t = 0. The magnetic and electric energy will be equal in magnitude at (T = Time period of oscillation of charge)
Electric Circuits
Consider a simple circuit consists of a (1)tungsten bulb, (2) a connecting wire and (3)a battery. Explain in detail what happens when i current flows from battery to the bulb and the bulb glows?
How light is produced from chemical energy?
How electrical energy flows within the wire?
What is the relation between free electrons in the wire and photos/ electromagnetic waves produced in the bulb?
What is the relation between chemical energy stored in the battery and flowing current through the wire?
How light is produced from chemical energy?
How electrical energy flows within the wire?
What is the relation between free electrons in the wire and photos/ electromagnetic waves produced in the bulb?
What is the relation between chemical energy stored in the battery and flowing current through the wire?
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#331389 on Nov 2022
#331389 on Nov 2022