series & parallel circuits

• potential difference is shared in a series circuit
• current is the same everywhere in a series circuit
• resistance adds up in a series circuits
• potential difference is the same everywhere in a parallel circuit
• current is shared between branches in a parallel circuit
• total resistance is less than the branch with the smallest resistance in parallel circuits
• when resistance increases current decreases
• when temperature increase resistance increases
• greater the length, the more resistance and lower the current
• there are 2 types of alternating electricity supplies, alternating current and direct current
• alternating current is when current changes direction
• direct current is when current flows in the same direction
• there are 3 types of wires in a cable, live, earth, neutral
• the live wire is brown
• the neutral wire is blue
• the earth wire is green and yellow
• the live wire carries the alternating potential difference from the main supply
• the neutral wire completes the circuit from the appliance back to the supply
• the earth wire acts as a safety wire to stop the appliance becoming live
• the earth wire prevents electric shocks from occurring if the appliance malfunctions or the live wire breaks off
• when there is too much current flowing through a fuse it melts and stops the current flowing
• reducing the current reduces resistance