Question
Write Kirchhoff's rules for electric circuit.
✓
Answer
First law (junction rule) : Algebraic sum of all the currents meeting at a junction in any closed circuit is zero. which means $\Sigma I =0$
Second law (loop rule): According to this law, the algebraic sum of the products of currents and resistances of any closed loop of any electric circuit is equal to the algebraic sum of electromotive forces working in that loop.
i.e.,$\Sigma E =\Sigma V =\Sigma IR$
Second law (loop rule): According to this law, the algebraic sum of the products of currents and resistances of any closed loop of any electric circuit is equal to the algebraic sum of electromotive forces working in that loop.
i.e.,$\Sigma E =\Sigma V =\Sigma IR$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Discuss the results of the Geiger-Marsden $\alpha$-particle scattering experiment with necessary graphs.
→Can the potential barrier across a p-n junction be measured by simply connecting a voltmeter across the junction?
The net charge in a current-carrying wire is zero. Then, why does a magnetic field exert a force on it?
A cylindrical surface of radius $r$ and length $l$ contains a thin, straight conducting wire of charge density $\lambda$ of infinite length. The axis of the cylindrical surface coincides with the length of the wire. Find the expression for electric flux through a cylindrical surface.
→Radioactive 131I has a half-life of 8.0 days. A sample containing 131I has activity $20\mu\text{Ci}$ at t = 0.
→- What is its activity at t = 4 days?
- What is its decay constant at t = 4.0 days?
Find the height over the earth's surface at which the weight of a body becomes half of its value at the surface.
In the given figure, a current carrying conductor of non-uniform cross-section is shown. At what points, the magnitude will be maximum of (i) current (ii) current density and (iii) drift velocity?
The light emitted in the transition n = 3 to n = 2 in hydrogen is called $\text{H}_\alpha$ light. Find the maximum work function a metal can have so that $\text{H}_\alpha$ light can emit photoelectrons from it.
→A simple pendulum of length 40cm is taken inside a deep mine. Assume for the time being that the mine is 1600km deep. Calculate the time period of the pendulum there. Radius of the earth = 6400km.
Give definition of the smallest unit of energy, ev (electron volt) and give its explanation.