Electrical circuits. Test yourself. 1 Complete this table. cell. ammeter
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1 Electrical circuits 1 omplete this table. Symbol omponent cell ammeter 2 Draw a circuit diagram for each circuit. What name is given to each type of circuit?... circuit... circuit 3 Tick the lamps that will light up. 4 omplete these sentences by crossing out the wrong words. a In a series circuit, as more lamps are added the lamps b In a parallel circuit, as more lamps are added the lamps Sheet 1 of 3
2 5 Write in the missing reading for each ammeter opposite ob has a battery-operated electric toothbrush which has stopped working. List three things for him to check to see what is wrong ou are given a box of components to sort out which are working and which are broken. ircuit diagram a Draw a circuit diagram for a test circuit with a lamp, that you could use to test lamps, switches and connecting wires from the box. b How would you use your circuit to find out if a lamp was faulty? c How would you use your circuit to find out if a wire was faulty? When a battery goes flat, what is used up? ircle the correct letter. energy current voltage D mass 9 omplete these sentences. In a cell,... energy is converted to... energy. In a lamp,... energy is converted to... energy and... energy. 10 Look at the circuit opposite. ircle the correct letter(s) each time. Which lamp or lamps will light when: a only switch is closed? Z b only switch is closed? Z c switches and are closed? Z Z Sheet 2 of 3
3 11 omplete these sentences to explain how a fuse protects an electrical appliance. hoose from the words below to fill the gaps. mends wire high low stops current melt resistance breaks fuse contains a piece of... which has a higher... than the rest of the circuit. If the current gets too..., the fuse will... This... the circuit so that the current..., protecting you from harm. 12 For a summer party, some friends are putting up a string of lights in the garden. What will happen if a bulb blows: a if the lights are wired in series?... b if the lights are wired in parallel? Which of these arrangements will give the brightest light from the lamp? ircle the correct letter. D D 14 Some children are given three different pieces of wire,, and. They connect up a circuit like this. The table shows their results. wires,, and connected in here Wire Lamp dim no light bright a Which piece of wire allows the current to pass through it easily?... b Which piece of wire has the highest resistance?... Sheet 3 of 3
4 Electrical circuits nswers 1 omplete this table. Symbol omponent lamp or bulb switch cell battery ammeter 2 Draw a circuit diagram for each circuit. What name is given to each type of circuit?... series circuit... parallel circuit 3 Tick the lamps that will light up. 4 omplete these sentences by crossing out the wrong words. a In a series circuit, as more lamps are added the lamps b In a parallel circuit, as more lamps are added the lamps Sheet 1 of 3
5 nswers 5 Write in the missing reading for each ammeter opposite ob has a battery-operated electric toothbrush which has stopped working. List three things for him to check to see what is wrong. Is the battery flat? re the contacts to the battery wet/dirty/corroded? re the contacts to the switch wet/dirty/corroded/does the switch work?... 7 ou are given a box of components to sort out which are working and which are broken. a Draw a circuit diagram for a test circuit with a lamp, that you could use to test lamps, switches and connecting wires from the box. ircuit diagram test components in this gap b How would you use your circuit to find out if a lamp was faulty? Put the lamp in the gap to complete the circuit. If the lamps... light, it is working. If neither lamp lights, it is faulty.... c How would you use your circuit to find out if a wire was faulty? Put the wire in the gap to complete the circuit. If the lamp... lights, the wire is working. If not, the wire is faulty When a battery goes flat, what is used up? ircle the correct letter. energy current voltage D mass 9 omplete these sentences. In a cell,... chemical energy is converted to... electrical energy. In a lamp,... electrical energy is converted to... light/heat energy and... heat/light energy. 10 Look at the circuit opposite. ircle the correct letter(s) each time. Which lamp or lamps will light when: a only switch is closed? Z b only switch is closed? Z c switches and are closed? Z Z Sheet 2 of 3
6 nswers 11 omplete these sentences to explain how a fuse protects an electrical appliance. hoose from the words below to fill the gaps. mends wire high low stops current melt resistance breaks fuse contains a piece of... wire which has a higher... resistance than the rest of the circuit. If the current gets too... high, the fuse will... melt This... breaks the circuit so that the current... stops, protecting you from harm. 12 For a summer party, some friends are putting up a string of lights in the garden. What will happen if a bulb blows: a if the lights are wired in series?... They will all go out. b if the lights are wired in parallel?... Only one will go out. 13 Which of these arrangements will give the brightest light from the lamp? ircle the correct letter. D D 14 Some children are given three different pieces of wire,, and. They connect up a circuit like this. The table shows their results. wires,, and connected in here Wire Lamp a Which piece of wire allows the current to pass through it easily?... b Which piece of wire has the highest resistance?... dim no light bright Sheet 3 of 3
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