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Current Electricity I - Coggle Diagram
Current Electricity I
Resistance
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The greater the resistance for a component, the smaller the current that flows
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Series circuit
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Two resistors in series have to share the total pd, the pd is lower across each resistor, so the current is also lower. Which means the total resistance increases
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Parallel circuit
the total resistance of two resistors in parallel is less than the resistance of the smallest of the two resistors
Explanation
In parallel, both resistors have the same pd
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By adding another loop, the current has more than one direction to go in, increasing the total current that can flow around the circuit, increasing the current decreases the resistance
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Ohm's law
The size of a current, I flowing through a component of resistance, R is directly proportional to the potential difference, V across the component at a constant temperature
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Current
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Parallel circuit
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Whenever the circuit splits into one or more branches, a certain amount of the current flows through each branch
the current inside a branch is the same - like mini series circuit. The same amount of current that entered the branch must leave it
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Charge = Current x Time, Q = I x t
Potential difference
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Parallel circuit
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Each branch in a parallel circuit has the same p,d as the power supply
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