To find the desired voltage on the used electric motor, it is necessary to use Ohm’s law: I = U / R, from where we express: U = R * I.
Values of variables: R – resistance of the used electric motor (R = 250 Ohm); I – current strength (I = 0.4 A).
Calculation: U = R * I = 250 * 0.4 = 100 V.
Answer: The voltage on the used electric motor is 100 V.
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