14188823
Question 1
Question
What is magnetism?
Answer
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Invisible lines of pressure
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Invisible lines of force
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Invisible lines of power
Question 2
Question
The magnetic materials are:
Answer
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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
Question 3
Question
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].
Answer
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current
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number of windings
Question 4
Question
What is voltage?
Answer
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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
Question 5
Question
What is current?
Answer
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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
Question 6
Question
What is Resistance?
Answer
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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
Question 7
Question
What is given off when current passes through a resistor?
Answer
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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
Question 8
Question
A current passes through a resistor of 25 Ohm's with 100 volts. What is the strength of the current?
Answer
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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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