S2 Electricity and circuits Revision Quiz To begin click the button below

Instructions You will see a series of questions on the last topic Click on the answer you think is correct Some pages use underlined answers, some use buttons or pictures

Question 1 If a substance allows electricity to flow through it, we call it … An Insulator A Conductor Electrical

Unlucky! Sorry that’s not correct, try again. If you want to start again, go back to the start page

Well Done! That’s right, if a substance can carry electricity we call it a conductor. A substance that can’t carry electricity is called an insulator.

Question 2 In this series circuit below, if one bulb goes out, the other bulb Goes Out Blows Gets brighter

Well Done! That’s right, in a series circuit, if one component breaks, all the others will go out too.

Question 3 In a parallel circuit like the one below, if one bulb blows, the others stay on, this is because The bulbs need less energy to work There is another path for current to flow

Well Done! That’s correct, in a PARALLEL circuit, there is more than one path for the current to flow Also, if one component breaks, the rest stay on

Question 4 If you increase the number of bulbs in a series circuit, the bulbs will Get dimmer Stay the same brightness Get brighter

Well Done! That’s right, in a SERIES circuit, adding more bulbs makes them dimmer In a PARALLEL circuit, adding more bulbs has no effect on their brightness

Question 5 Which meter is used to measure current? AmmeterOhm meter Voltmeter

Well Done! That’s right, we use an ammeter to measure current Current is measured in amperes or amps (A)

Question 6 Which Diagram shows the correct way to connect an ammeter?

Well Done! Ammeters must be connected in series Increasing the current will give a bigger reading on the ammeter and make a bulb brighter

Question 7 Voltage is the amount of energy carried by the charges round the circuit We measure voltage using what? Voltmeter ammeter ohmmeter

Well Done! We use a voltmeter to measure voltage We connect a voltmeter across a component – in parallel

Question 8 Current is related to resistance, if you have a high current you will have Low resistance High resistance

Well Done! High current = Low resistance Low current = high resistance

What unit is current measured in? Amps Volts Ohms

Correct! That was an easy one…. Current is measured in Amps with the unit symbol A Click to continue

No! Volts is the unit of measure of the voltage! Try again

Incorrect! Ohms is not a measure of current… it’s the measure of resistance Try again

The circuit below shows two bulbs in ? Series Parallel

Correct! The bulbs are connected in series with each other.

Wrong! The bulbs are connected in a single continuous circuit… a series circuit!

In the circuit below which bulbs will be lit when the switch is open? In the circuit below which bulbs will be lit when the switch is open? Both bulbs Bulb 1 only Neither bulb

No… If the switch is open there is not a complete circuit and so no current will flow. Neither bulb will light Neither bulb will light

Good! If the switch is open there is no current flowing so neither bulb will light. Carry on…

If the reading on ammeter 1 is 1A what will be the reading on ammeter 2 if the bulbs are considered identical? 0A 1A 0.5A

Incorrect! In a series circuit the current is the same at all points Try again..

Correct! The current measured at any point will be the same in a series circuit. Continue..

What is the reading on the voltmeter if the bulbs are identical? 18V9V 4.5V

In a series circuit if the bulbs are identical the battery voltage will be divided evenly between them.. Try again

Well done! The battery voltage of 9V will be split evenly between the two bulbs. Carry on..

In the parallel circuit below, with identical resistors, what will be the reading on the voltmeter? 6V 12V 3V

Yes! The voltage across each branch of the circuit will be equal to the battery voltage. Continue

Oops! Remember the voltage across each branch of a parallel circuit is equal to the battery voltage. Try again

If all the resistors are identical what will be the reading on the ammeter? 3A 9A 1A

For the same circuit what will be the reading on the voltmeter? 4V 36V12V

Incorrect! The sum of currents in the branches will equal the current drawn from the supply.

Correct! The sum of currents in the branches equal the supply current so the current in each branch must be 1 amp. Continue

No!! In a parallel circuit the voltage across each branch equals the battery voltage! Try again

Very good! The voltage across the resistor must equal the battery voltage.. 12V Carry on..

How could you increase the strength of an electromagnet ? Decrease the current through the wires Increase the number of coils around the core Remove the core

That’s wrong !! Without a core the electromagnet would not work Decreasing the current would decrease its strength Try again

Very good! The electromagnet’s strength is increased by increasing the number of coils

Congratulations!! You’ve finished the quiz! You can do the quiz again if you want Revise to be prepared for your test Start againEnd