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ch7 ch test
science
| Question | Answer |
|---|---|
| In a step up transformer the number of terns of wire is greater in the _____ coil than in the primary coil. And the output voltage exceeds the input voltage. | secondary |
| In a step up transformer the number of terns of wire is greater in the secondary coil than in the _______ coil. And the output voltage exceeds the input voltage. | primary |
| In a step up transformer the number of terns of wire is greater in the Secondary coil than in the primary coil. And the ____ voltage exceeds the input voltage. | output |
| In a step up transformer the number of terns of wire is greater in the Secondary coil than in the primary coil. And the output voltage exceeds the _____ voltage. | input |
| A devise that increases or decreases voltage in a power line is called a ___ | Transformer |
| Current that does not revers direction is called____ | Direct current |
| The location of the strongest magnetic forces on a magnet are the ____ | Magnetic poles |
| Current that reverses direction in a regular pattern is called _____ | Alternating current |
| The regin around a magnet where the magnetic forces act is the ____ | Magnetic field |
| Objects that keep there magnetic properties for a long time are called ___ | Perminet magnets |