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Two parallel metal plates have a separation of 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the higher potential, what are the magnitude and direction of the electric field between the plates?

a) 100 N/C upward

b) 100 N/C downward

c) 40000 N/C upward

d) 40000 N/C downward

e) 400 N/C downward

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