Cam 10 Magnetism
to check basic understanding of magnet and its effects
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Topics of this game:
- A strong electromagnet is used to attract pins. What happens when the current in the coil is halved?
- A coil carries a current in a magnetic field. The coil experiences a turning effect. Which device uses this effect?
- A magnet is suspended from a spring so that it can move freely inside a stationary coil. The coil is connected to a sensitive centre-zero galvanometer.
- An e.m.f. is induced across a wire when it moves through the magnetic field between the poles of a magnet. Which electrical device operates because of this effect?
- A current-carrying coil in a magnetic field experiences a turning effect. How can the turning effect be increased?
- There is a coil of wire connected to a voltmeter. A student has a magnet and an unmagnetised iron rod. How can an e.m.f. be induced across the coil?
- A toy railway engine is driven around a track by a d.c. electric motor. How can the speed of the motor be increased?
- Which statement about a magnet is correct?
- In which pair are both materials magnetic?
- Which action will demagnetise a magnetised piece of steel?
- Which statement about a permanent bar magnet is correct?
- Which metal is suitable to use to make a permanent magnet?
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