
An electrical circuit is shown in figure. Calculate the potential difference (in ) across the resistor of as will be measured by the voltmeter of resistance .



Important Questions on Current Electricity
A potentiometer wire is long and has a total resistance of . if the galvanometer shows zero deflection at the position , then find the value of unknown resistance ( in ).

In the figure shown, for given values of and the balance point for Jockey is at from . When is shunted by a resistance of , balance point shifts to . Find
(Approximate the answer to two decimal place)

In the primary circuit of potentiometer for rheostat can be varied from to . Initially it is at minimum resistance (zero). Now the rheostat is put at maximum resistance and the switch is closed. New balancing length is found to . Find the internal resistance of the cell.

identical galvanic cells, each of internal resistance are arranged as several in-series groups of cells connected in parallel. The arrangement has been laid out so that power output in an externally connected resistance of value is maximum. If cells are connected in every series group that form parallel combination, then find value of .

In given electrical circuit, let power supplied by battery be '' watt and power supplied by battery ? be ' ' watt then what is the value of .

Find the resistor in which maximum heat will be produced.

In the circuit shown in figure potential difference between point and is . Find the current (in ) passing through resistance.

For the circuit shown in figure, find
(i) the initial current through each resistor
(ii) steady state current through each resistor
(iii) final energy stored in the capacitor
(iv) time constant of the circuit when switch is closed.
(v) time constant of the circuit when switch is open
