Physics-
General
Easy
Question
In the shown wire frame, each side of a square (the smallest square) has a resistance R. The equivalent resistance of the circuit between the points A and B is :

- R
- 2R
- 4R
- 8R
The correct answer is: 2R
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Two circular rings of identical radii and resistance of 36Weach are placed in such a way that they cross each other’s centre C1 and C2 as shown in figure. Conducting joints are made at intersection points A and B of the rings. An ideal cell of emf 20 volts is connected across AB. The power delivered by cell is

From the figure


Two circular rings of identical radii and resistance of 36Weach are placed in such a way that they cross each other’s centre C1 and C2 as shown in figure. Conducting joints are made at intersection points A and B of the rings. An ideal cell of emf 20 volts is connected across AB. The power delivered by cell is

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A cell of emf E having an internal resistance 'r ' is connected to an external resistance R. The potential difference ' V ' across the resistance R varies with R as shown by the curve:

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1
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\ current drawn from the battery
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\ current drawn from the battery
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