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संबंधित प्रश्न
The V-I graph for a series combination and for a parallel combination of two resistors is shown in the figure below. Which of the two A or B. represents the parallel combination? Give reasons for your answer.
Two resistors of 4Ω and 6 Ω are connected in parallel to a cell to draw 0.5 A current from the cell.
(i) Draw a labelled circuit diagram showing the above arrangement.
(ii) Calculate the current in each resistor. What is an Ohmic resistor?
How does the presence of impurities in a metal affect its resistance?
If five resistances, each of value 0.2 ohm, are connected in series, what will be the resultant resistance?
State how are the two resistors joined with a battery when same current flows in each resistor.
What is the equivalent resistance between A and B in the given circuit (Fig?)
Choose the correct alternative and rewrite the following:
You are given three equal resistances. In how many combinations can they are arranged?
Bends in a rubber pipe reduce the flow of water through it. How would the bands in a wire affect its electric resistance?
State the effect of rise in temperature on the resistance of semi-conductors.
Write an expression for calculating electrical power in terms of current and resistance.
