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Questão 1
Questão
What is magnetism?
Responda
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Invisible lines of pressure
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Invisible lines of force
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Invisible lines of power
Questão 2
Questão
The magnetic materials are:
Responda
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Steel
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Iron
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Copper
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Silver
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Nickel
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Cobalt
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Aluminium
Questão 3
Questão
You 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].
Responda
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current
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number of windings
Questão 4
Questão
What is voltage?
Responda
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A measure of pressure
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A measure of force
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A measure of current
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A measure of electrical energy
Questão 5
Questão
What is current?
Responda
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The rate of flow of electrons
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How many windings there are on the electromagnet
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The strength of the commutator
Questão 6
Questão
What is Resistance?
Responda
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Current multiplied by voltage
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A measure of how much the flow is prevented
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A measure of the time it takes for the electric motor to reach its full capacity
Questão 7
Questão
What is given off when current passes through a resistor?
Responda
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Force
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Steam
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Smell
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Heat
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Vibration
Questão 8
Questão
A current passes through a resistor of 25 Ohm's with 100 volts. What is the strength of the current?
Responda
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2 amps
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3 amps
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4 amps
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5 amps
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6 amps
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