Superconductors have been discussed as a means for electrical energy storage. Because they are resistanceless, a current once started in a loop would continue without loss. If a current of 1.0 × 10^4 A were started in a huge toroidal coil of radius 1.0 km and inductance 70 H, how much electrical energy (in kWh) could be stored?
a. 480 kWh
c. 690 kWh
b. 300 kWh
d. 970 kWh
D
Physics & Space Science
You might also like to view...
Light goes slower through glass than through air
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
Consider the right-going wave and the possible left-going waves displayed in problem Q2T.3. For which of the choices will there be an instant where the combined wave is a rectangular wave as shown below? 
A. A B. B C. C D. D E. None of the above
Physics & Space Science
The strongest lines present in spectral class A stars are absorption lines of
A) complex molecules. B) hydrogen. C) oxygen. D) iron. E) helium.
Physics & Space Science
Some quasars have fuzz around them that produce spectra similar to normal galaxies
Indicate whether the statement is true or false
Physics & Space Science