Current Electri...

An electric heater is connected to the voltage supply. After a few seconds, current get its steady value then its initial current will be?

A wire of resistance $$12\: ohm/meter\: $$is bent to form a complete circle of radius $$10cm$$. The resistance between its two diametrically opposite points, A and B as shown in the figure is?

An infinite ladder network of resistances is constructed with $$1\Omega$$ and $$2\Omega$$ resistance as shown in figure. The $$6$$V battery between A and B has negligible internal resistance. The equivalent resistance between A and B is?

In the series combination of n cells each cell having emf $$\varepsilon$$ and internal resistance r. If three cells are wrongly connected, then total emf and internal resistance of this combination will be.

In a Wheatstone bridge if the battery and galvanometer are interchanged then the deflection in galvanometer will:

Point out the right statements about the validity of Kirchhoff's junction rule.

A circuit has a section ABC as shown in figure. If the potentials at points A, B and C are $$V_1, V_2$$ and $$V_3$$ respectively. The potential at point O is?

In a potentiometer the balancing with a cell is at length of $$220$$cm. On shunting the cell with a resistance of $$3\Omega$$ balance length becomes $$130$$cm. What is the internal resistance of this cell?

Which of the following statements is false?

Find the equivalent resistance between points A and B in the given circuit