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TEC 3º - Electrical energy and power + circuits
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What happens to the brightness of lightbulbs in a parallel circuit when you add more?
They stay the same
What happens to the brightness of lightbulbs in a series circuit when you add more?
They get dimmer
If a series circuit has resistances of 2, 4, 3, and 4, what is the equivalent resistance?
13
In a parallel circuit, what is the inverse of the equivalent resistance equal to?
The sum of the inverses of all resistances in the circuit
In a series circuit, what is the equivalent resistance equal to?
The sum of all resistances in the circuit.
What type of circuit can we see in the picture?
A series-parallel combination circuit
What type of circuit can we see in the picture?
A parallel circuit
What type of circuit can we see in the picture?
A series circuit
How do we calculate power (P)?
By multiplying the voltage of each component by the current that flows through it. P = V.I
What do we call the phenomenon where a small amount of unwanted electrical energy is always consumed by elements in a circuit?
The Joules effect
In the International System, what is the unit of measurement for electrical power?
watts (W)
In the International System, what is the unit of measurement of energy?
joules (J)
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