Current Electri...

The $$n$$ rows each containing in cells in series are joined in parallel. Maximum current is taken from this combination across an external resistance of $$3\Omega$$. If the total number of cells used is $$24$$ and internal resistance of each cell is $$0.5\Omega$$, then

Brown,black and gold is the color band on the resistor,find its resistance?

Blue,green,yellow and yellow is the color band on the resistor,find its resistance?

Electromotive force represents

A straight conductor of uniform cross-section carries a current $$I$$. Let $$S$$ be the specific charge of an electron. The momentum of all the free electron per unit length of the conductor due to their drift velocity only, is

The tolerance for silver color in color coding of a resistor is:

Which color band  in the color coding of a resistor has the multiplier $$10^{-1}$$?

What is the minimum number of bulbs, each marked $$60W, \ 40V,$$ that can work safely when connected in series with a $$240V$$ mains supply?

Two wire of same metal have same length but their cross-sections are in the ratio $$3:1$$. They are joined in series. The resistance of thick wire is $$10$$. The total resistance of combination will be

Kirchoffs 1st and 2nd laws are based on conservation of