An airplane is flying through a thundercloud at a height of 2 500 m. (This is a very dangerous thing to do because of updrafts, turbulence, and the possibility of electric discharge.) If there is a charge concentration of +42 C at height 4 000 m within the cloud and ?42 C at height 500 m, what is the magnitude of the electric field E at the aircraft? (ke = 8.99 × 10^9 N·m2/C2)
a. 9.4E+4 N/C
b. 1.7E+5 N/C
c. 6.2E+4 N/C
d. 2.6E+5 N/C
e. 1.9E+5 N/C
d
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