Electromagnetism questions | form four Physics
Find Electromagnetism examination questions, form four Physics in acaproso.com
| # | Question |
|---|---|
| 1 | Why is the iron core made of laminations instead of being in one solid piece? Short answers |
| 2 | A transformer is used on the 240V a.c. supply to deliver 8A at 90 Volts to a heating coil; calculate Short answers |
| 3 | (a)Draw a labelled diagram of a simple d.c. motor. (c) Why does such a motor occasionally not start to rotate when the current is switched on but will give continuous rotation after a slight push? Short answers |
| 4 | What practical steps are taken in order to minimize eddy currents in the core of a Short answers |
| 5 | Is it possible to construct a transformer with 100% efficiency? Why? Short answers |
| 6 | What is the main function of step up transformer?
Multiple choices |
| 7 | The rule used to deduce the direction of the magnetic field lines due to solenoid or a Fill in blanks |
| 8 | The function of an induction coil is to produce ____________. Fill in blanks |
| 9 | What is meant by the terms solenoid and electromagnetic induction? Short answers |
| 10 | List down two applications of electromagnetics. Short answers |
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