Physics-
General
Easy
Question
What is the equivalent resistance between points 
and 
in the circuit shown in fig.?
- 2R
The correct answer is:
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In the given circuit, the battery has an emf E=60 V and an internal resistance 
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When an ammeter of negligible internal resistance is inserted in series with circuit it reads 1 A. When the voltmeter of very large resistance is connected across X it reads 1 V. When the point A and are shorted by a conducting wire, the voltmeter measures 10 V across the battery. The internal resistance of the battery is equal to
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Fig. shows a part of circuit. When a current I=1.5A passes through it in the direction shown, power delivered to it (section XY) is 75 W. Potential difference between X and Y and also the emf E of the cell are respectively ( assume that the cell has a negligible internal resistance)
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Which of the graphs given below represents current voltage characteristics when P and Q are in series.
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Which of the graphs given below represents current voltage characteristics when P and Q are in series.
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