Engine : Electricity - 408/1386
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| If the illustrated device in figure "B" has a step-up ratio of 10 to 1 what voltage would be measured at the secondary shortly after the primary of the device is connected to 110 volts DC with a current of 12 amps? Illustration EL-0055 |
| A) 1000 volts |
| B) 1100 volts |
| C) 110 volts |
| D) 0 volts |
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Illustration EL-0055
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| The ratio is a red herring. Think transient properties of an inductor. A spike in current (connecting the power) will cause a spike in resistance. |
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| ah tricky. DC doesnt work with transformers |