Before the switch is closed in the figure, the potential across the capacitor is 200 V. At some instant after the switch is closed, the instantaneous current is 0.70 A. What is the energy in the capacitor at this instant?

A. 49 mJ
B. 31 mJ
C. 80 mJ
D. 0.13 J
E. 62 mJ


Answer: B

Physics & Space Science

You might also like to view...

Which of the following is true of Phobos?

A) It is bigger than Mars. B) It is almost certainly a captured asteroid. C) Its gravitational acceleration is equivalent to that of Earth. D) Its atmosphere is completely made of nitrogen.

Physics & Space Science

Express (4.3 × 106 )-1/2 in scientific notation

A) 2.1 × 103 B) 4.8 × 10-4 C) 2.1 × 104 D) 2.1 × 10-5

Physics & Space Science

If carbonic acid (H2CO3) were to undergo ionization, what would one of the products be?

A) H- B) CO2 C) H2O D) CO3-1 E) CO3-2

Physics & Space Science

The radial velocity of a star's motion in space can also broaden its spectral lines

Indicate whether the statement is true or false

Physics & Space Science