An ammeter of resistance `0*80Omega` can measure current upto `1*0A`.
(a) What must be the value of shunt resistance to enable the ammeter to measure current upto `5*0A`?
(b) What is the combined resistance of the ammeter and the shunt?

Explanation

To solve the problem step by step, we will break it down into two parts as given in the question.

### Given:
- Resistance of the ammeter \( R_g = 0.80 \, \Omega \)
- Maximum current the ammeter can measure \( I_g = 1.0 \, A \)
- Total current to be measured \( I = 5.0 \, A \)

### Part (a): Finding the value of shunt resistance \( R_s \)
...