Current Elecrity

Question 1

Measurement symbol. Unit. Unit symbol. Measured using.

Answer 1

Current. I. Ampere. A. Ammeter

Question 2

Measurement symbol unit. Unit symbol. Measured using

Answer 2

Potential
Difference/voltage V. Voltage. V voltmeter

Resistance. R. Ohm. o. Ohmmeter

Question 3

Bulb in series

Answer 3

If a bulb in series blows,none of them turn on.

The same amount of current flows through each bulb in the series.

The voltage is split up,depending on the size of the bulb.

Question 4

Bulb in series

Answer 4

Lights in your house are parallel as are car head lights,if the bedroom light blows,the kitchen light is unaffected.,the current split between the bulbs,if they are the same size,the the current would split evenly.,the voltage flows though each bulb so they are brighter and those in series.

Question 5

Fuses

Answer 5

A fuse is a safety device that prevents the circuit from overheating .it will melt when it is too hot,breaking the circuit.

Question 6

A Circuit breaker

Answer 6

Is used in a fuse board of the home,and this trips,to stop the flow of current from entering the house

Question 7

Why Is a circuit breaker preferable ?

Answer 7

When a fuse blows it has to be replaced,modern houses have circuit breakers which act like a brimetallic strip and simply switch off if the current get too big.

Question 8

Live wire

Answer 8

Is brown and carried most electricity it is connected to the plugs fuse on the right hand side.

Question 9

Neutral wire

Answer 9

Is blue and is connected to the left hand side

Question 10

Earth wire

Answer 10

Is a safety wire,no electricity flows in the earth

Question 11

Measuring electricity

Answer 11

The watt(w) is unit of electrical power