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What type of force is used in wireless charging?
Electromagnetic
An electric generator turns ___ energy into ___ energy.
Mechanical, electrical
What is the SI unit for resistance?
Ohms (Ω)
Electric current in a wire produces a ___ field.
Magnetic
What types of energy are used and produced when to cause a flashlight to light up?
Chemical of battery to electric to thermal and light energy.
What could you do to increase the magnetism of an electromagnet?
Increase number of coils, increase number of batteries.
What is the difference between a motor and generator?
A generator transfers work into electricity. A motor transfers electricity into work.
If a circuit has a voltage of 9V and a total resistance of 18 Ohms, what is the current?
0.5 Amps.
If an iPhone charger has a power of 15 Watts at 1.5 amps, what is the voltage required?
10 Volts
If 15 electrons pass a point in 3 seconds, what is the current in Amps?
5 Amps
What causes static electricity between a balloon and your hair?
Electrons move, different objects become positively or negatively charged.
If three resistors in series are 10 Ohms, 12 Ohms, and 3 Ohms, what is the total resistance?
25 Ohms
What causes magnetism?
Movement of electrons.
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