A wire is connected to a battery between the point $M$ and $N$ as shown in the figure $(1)$. The same wire is bent in the form of a square and then connected to the battery between the points $M$ and $N$ as shown in the figure $(2)$. Which of the following quantities increases?
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(a)
When the wire is bent in the form of a square and connected between $M$ and $N$ as shown in fig.$(2)$, the effective resistance between $M$ and $N$ decreases to one fourth of the value in fig.$(1)$. The current increases four times the initial value according to the relation $V=I R$. Since $H=I^2 R t$, the decrease in the value of resistance is more than compensated by the increases in the value of current. Hence heat produced increases. Percentage loss in energy during the collision $\simeq 56 \%$
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Which of the following statement($s$) is(are) correct?
$(A)$ The magnitude of current flowing through $R_1$ is $7.2 A$.
$(B)$ The magnitude of current flowing through $R_2$ is $1.2 A$.
$(C)$ The magnitude of current flowing through $R_3$ is $4.8 A$.
$(D)$ The magnitude of current flowing through $R_5$ is $2.4 A$.
