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  • Created on: 20-11-18 17:39


know the symbols for a bulb switch and battery

Conductors and insulators. Conductors are substances that an electric charge can pass through without difficulty. An electric charge cannot pass through an insulator easily. Different types of atoms make a substance a conductor or an insulator.

Many circuits have a combination of series and parallel resistors. Generally, the total resistance in a circuit like this is found by reducing the different series and parallel combinations step-by-step to end up with a single equivalent resistance for the circuit. This allows the current to be determined easily.

Ohm's Law is one of the most fundamental of laws for electrical theory. The Ohms Law formula links voltage and current to the properties of the conductor in a circuit.

Electric current. A simple electric circuit, where current is represented by the letter i. The relationship between the voltage (V), resistance (R), and current (I) is V=IR; this is known as Ohm's Law. The electrons, the charge carriers in an electrical circuit, flow in the opposite direction of the conventional electric current.

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A circuit composed solely of components connected in series is known as a series circuit; likewise, one connected completely in parallel is known as a parallel circuit. In a series circuit, the current through each of the components is the same, and the voltage across the circuit is the sum of the voltages across each component.

Series circuits are sometimes called current-coupled or daisy chain-coupled. The current in a series circuit goes through every component in the circuit. Therefore, all of the components in a series connection carry the same current

if a wire is broken then the circuit wont work- the bulbs

but in parallel one will work and one wont -whatever wires wont work

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