Electromagnetism Quiz

Lilli G 8 Fragen

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1What is magnetism?
1. AInvisible lines of pressure
2. BInvisible lines of force
3. CInvisible lines of power
2The magnetic materials are:
1. ASteel
2. BIron
3. CCopper
4. DSilver
5. ENickel
6. FCobalt
7. GAluminium
3You can increase the strength of an electromagnet by increasing the strength of the [blank_start]current[blank_end] and the [blank_start]number of windings[blank_end].
1. Acurrent
2. Bnumber of windings
4What is voltage?
1. AA measure of pressure
2. BA measure of force
3. CA measure of current
4. DA measure of electrical energy
5What is current?
1. AThe rate of flow of electrons
2. BHow many windings there are on the electromagnet
3. CThe strength of the commutator
6What is Resistance?
1. ACurrent multiplied by voltage
2. BA measure of how much the flow is prevented
3. CA measure of the time it takes for the electric motor to reach its full capacity
7What is given off when current passes through a resistor?
1. AForce
2. BSteam
3. CSmell
4. DHeat
5. EVibration
8A current passes through a resistor of 25 Ohm's with 100 volts. What is the strength of the current?
1. A2 amps
2. B3 amps
3. C4 amps
4. D5 amps
5. E6 amps