Question 100 of 209

A $2V$ battery is connected across $AB$ as shown in the figure. The value of the current supplied by the battery when in first case battery's positive terminal is connected to $A$ and in second case when positive terminal of battery is connected to $B$ will respectively be:

A$0.2A$ and $0.1A$B$0.1A$ and $0.2A$C$0.2A$ and $0.4A$D$0.4A$ and $0.2A$

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Answer: (D) $0.4A$ and $0.2A$

When $+\text{ve}$ polarity is connected to $\text{A}$

Then ${D}_{1}$ is forward biased and ${D}_{2}$ is reversed biased i.e.



$∴$ ${I}_{1}$ current through ${D}_{1}=\dfrac{2}{5}=0.4A$

When $+\text{ve}$ polarity is connected to $\text{B}$ then ${D}_{2}$ is forward biased and ${D}_{1}$ is reversed biased then



$\Rightarrow {I}_{2}=\dfrac{2}{10}=0.2A$