Ellie has two wire circuits, each connected to its own 6 V battery. One circuit has a resistance of 0.80 Ω. The other circuit carries a 4.5 A current. Which circuit has greater resistance?

The second circuit with 4.5 A current has more resistance.

Explanation:

potential difference = 6 V

resistance of first circuit=0.80 Ω

for second circuit, current = i=4.5 A

using Ohm's law V = i R

6=4.5 R

R=1.33 Ω

So the second circuit has a greater resistance.