Q8) The ammeter in the given circuit reads zero. \( A B \) is a uniform wire of
5 points length \( 6 m \). It is made of a material (not copper) of high resistivity. Movable jokey from the ammeter is placed at point \( J \) on the wire. \( I(A J)= \) \( 120 cm \). Find value of resistor \( R \) in \( Ohm \)
