Electricity
A form of energy that involves the flow of electrical charges is called_____________?
What is electricity?
The flow of negative charges through matter
What is electric current?
A closed pathway that an electrical current flows
Circuit
What would happen if the north ends of two magnets were close together?
What is repel?
What is An initial resistance of 50 Ω allows a current of 2.6 A. When the resistance is doubled, the current is 2.6 A?
(the initial voltage is 130 V (2.6*50) and the final
voltage is 260 V (2.6*100).
A measure of how much a material opposes the flow of electric current and changes electric current into heat energy.
What is resistance?
What did we use to build circuits?
Battery, wires, loads & switches
If a south end of a magnet is close to a north end of a magnet, the magnets will _________.
What is attract?
This temporary magnet is formed when an electric current flows through a wire coiled around certain metal cores.
What is an electromagnet?
If you rub your hair on a balloon and the balloon becomes negatively charged, what charge will your hair have?
What is a positive charge?
The flow of electricity produces magnetism, what makes an electromagnet stronger?
What is increase the number of coils of insulated wire?
True or False
In a series circuit if one bulb burns out the other bulb will burn?
False or What is False?
In an electromagnet, what direction does the electrons flow?
What is flow from the negative terminal of a battery to the positive terminal of a batter?
A series circuit that is used to produce a lower voltage from a higher voltage battery.
What is voltage divider?
An object that attracts certain metals is called __________.
What is a magnet?
If a circuit has a current of 0.25 A and a voltage of 3 V how much resistance is in the circuit?
What is 12 ohms?
Current flows through all the bulbs at once so that they are equally bright, current flows in this through one bulb at a time causing brightness to decrease as it flows through each bulb
What is a series and parallel circuit?
If you are investigating the relationship between magnetism and the movement of an electrical charge with a coil of wire hooked to an ammeter to measure current. There is a movable magnet inside the coil. If you want to increase the amount of current what would you do?
What is move the magnet faster within the coil because this will increase the rate of change of the magnetic field?
What's an example of a direct current?
A battery
A student created a simple motor using a D battery, a magnet, two paper clips, a rubberband, and some insulated wire. The coil loop in the center spins freely What would happen to the spinning loop if the magnet is flipped upside down so that the south and north poles are inverted?
What is the spinning loop will change the direction it spins?
The equation to justify, "When the voltage increases current increases"
What is I= V/R?
What type of circuit is this: It allows the flow of electricity to pass through multiple paths throughout a circuit.
Parallel Circuit
What is the area around the magnet where the force of the magnet can act called?
What is a magnetic field?
What is the most significant cause of the motor's spin?
What is the force of the electromagnetic field?