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Ch 22 (S2 (Resistance, The unit of resistance is the ohm, As electrons…
Ch 22
S2
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As electrons flow through a circuit they collide and electricity charges in the material to make up the circuit
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Copper is a good conductor less heat is produced as electric current flows in copper wires. The electric resistance of a wire also depends on the length and thickness
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S3
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When you connect a conductor, such as a wire or a light bulb between positioning negative terminals o batteries.
For current to flow, the circuit must provide an unbroken path for current to follow. In a series circuit, electrical devices are connected a long the same current path. As a result, the current is the same through every device. however each new device that is added to the circuit decreases the current through out the circuit.
A current can enter your body when you accidentally become part of an electric circuit. Whether you receive a shock depends on the amounts of current flows into your body.
The current branches so that electrons flow through each of the paths, as the current through the circuit increases , the wire heats up.
Electric power the rate at which electrical energy if converted into other forms of energy. Electrica powers equation power (in watts ) = current ( in amperes ) x Voltage ( in volts ) p - IV
S1
An atom becomes negatively charged when it gains extra electrons If an atom loses electrons it becomes positive charged
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Rubbing is one way that electrons can be transferred. Sometimes the movement of of charge can be caused by the movement of ions instead of movement of electrons
There are two kinds of materials one is called a conductor that can move much more easily while insulators is another one where they dont move as easy
All charged objects exert an electric force on each other. The electric force on each other. The electric force between two charges can be attractive or repulsive. The positively charged protons in the nucleus exerts an attractive electric force on the negatively charged electrons