The value of current $I$ in the given current distribution is (in $A$)

Five conductors meet at a point $x$ as shown in the figure. What is the current flowing through the fifth conductor?

For the given circuit,the reading of the ammeter in amperes is........

The current in the given circuit is ................ $A$.

In the circuit shown in the given figure,the resistances $R_1$ and $R_2$ are respectively:

The Wheatstone bridge shown in the figure gets balanced when the carbon resistor used as $R_1$ has the colour code (Orange,Red,Brown). The resistors $R_2$ and $R_4$ are $80 \, \Omega$ and $40 \, \Omega$,respectively. Assuming that the colour code for the carbon resistors gives their accurate values,the colour code for the carbon resistor used as $R_3$ would be