Answer:
Explanation:
Ohm's law:
V = IR
Given V = 120 V and R = 15 Ω:
120 V = I (15 Ω)
I = 8 A
One of the most surprising things about a superconductor is that
it has NO electrical resistance. The resistance doesn't just become
very very very small. It becomes literally completely zero. (This is
a big part of the reason why it's called a "super-conductor".)
If you start an electric current flowing in a superconductor, you can
connect the ends of it together, and the current keeps going around
and around the loop and never dies out !
Answer: 270 km
Explanation:
3 cm/80 km :: 10 cm/(x)km
cross multiply
3x = 80(10)
x = 800/3 = 266.66666... ≈ 270 km
<span>1200 meters is less than 1 kilometer
</span>is false