मराठी
तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएचएससी विज्ञान इयत्ता १२

State Kirchhoff’s current rule.

Advertisements
Advertisements

प्रश्न

State Kirchhoff’s current rule.

टीपा लिहा
Advertisements

उत्तर

  1. Kirchhoff’s current rule states that the algebraic sum of the currents at any junction of a circuit is zero. 
    i.e `Σ_"junction"` i = 0
  2. It is a statement of conservation of electric charge.
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Current Electricity - Evaluation [पृष्ठ १२०]

APPEARS IN

सामाचीर कलवी Physics - Volume 1 and 2 [English] Class 12 TN Board
पाठ 2 Current Electricity
Evaluation | Q II. 13. | पृष्ठ १२०

संबंधित प्रश्‍न

The current is drawn from a cell of emf E and internal resistance r connected to the network of resistors each of resistance r as shown in the figure. Obtain the expression for

  1. the current draw from the cell and
  2. the power consumed in the network.


Given the resistances of 1 Ω, 2 Ω, 3 Ω, how will be combine them to get an equivalent resistance of 6 Ω?


Determine the equivalent resistance of networks shown in Fig.


Calculate the value of the resistance R in the circuit shown in the figure so that the current in the circuit is 0.2 A. What would b the potential difference between points B and E?


Twelve wires, each of equal resistance r, are joined to form a cube, as shown in the figure. Find the equivalent resistance between the diagonally-opposite points a and f.


Twelve wires each having a resistance of 3 Ω are connected to form a cubical network. A battery of 10 V and negligible internal resistance is connected across the diagonally opposite corners of this network. Determine its equivalent resistance and the current along each edge of the cube.


Kirchhoff s second law is based on the law of conservation of ______


In a meter bridge the point D is a neutral point (Figure).

  1. The meter bridge can have no other neutral point for this set of resistances.
  2. When the jockey contacts a point on meter wire left of D, current flows to B from the wire.
  3. When the jockey contacts a point on the meter wire to the right of D, current flows from B to the wire through galvanometer.
  4. When R is increased, the neutral point shifts to left.

The circuit in figure shows two cells connected in opposition to each other. Cell E1 is of emf 6V and internal resistance 2Ω; the cell E2 is of emf 4V and internal resistance 8Ω. Find the potential difference between the points A and B.


In the circuit shown in Figure below, E1 and E2 are batteries having emfs of 25V and 26V. They have an internal resistance of 1 Ω and 5 Ω respectively. Applying Kirchhoff’s laws of electrical networks, calculate the currents I1 and I2.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×