Multiple Choice
A helium nucleus is located between the plates of a parallel-plate capacitor as shown. The nucleus has a charge of +2e and a mass of 6.6 × 10-27 kg. What is the magnitude of the electric field such that the electric force exactly balances the weight of the helium nucleus so that it remains stationary? 
A) 4.0 × 10-7 N/C
B) 6.6 × 10-26 N/C
C) 2.0 × 10-7 N/C
D) 5.0 × 10-3 N/C
E) 1.4 × 10-8 N/C
Correct Answer:
Verified
Correct Answer:
Verified
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