Resistance can be calculated using equation:
[tex] V=I\times R [/tex]
[tex] R=\frac{I}{V} [/tex]
Here, V denotes voltage
I denotes current
R denotes resistance
Here V is given as 84 V
I is given as 3 A
So by putting all the values in the equation, we will get:
[tex] 84=3\times R [/tex]
[tex] R=\frac{3}{84} [/tex]
R=0.035 ohm
So, resistance here will be 0.035 ohm .