1) What type of energy does a runner jogging have? a) Potential b) Electrical c) Kinetic d) Heat 2) What type of energy does the water in a dam have? a) Potential b) Chemical c) Kinetic d) Electrical 3) We can induce a voltage with a magnet and coils of wire. How might we decrease the induced voltage? a) Move the magnet through the coil with greater speed b) Increase the number of coils of wire c) Replace the magnet with one of lesser field strength d) Turn the magnet around 4) What are the two poles of a magnet? a) Positive and Negative b) North and South c) Attract and repulse d) Plus and minus 5) What are the two types of electric charge? a) Positive and Negative b) North and South c) Attract and repulse d) Plus and minus 6) If you bring two oppositely charged objects together, they will...? a) rotate b) repulse c) activate d) attract 7) Voltage provides electrons with what? a) Current b) Charge c) Energy d) Amps 8) To measure current in a circuit we use..? a) An Ammeter b) A Voltmeter c) An Ohmmeter d) A Coulomb meter 9) What effect will adding another battery have to a circuit containing a bulb? a) The bulb will get dimmer b) The bulb will stay the same c) The bulb will get brighter d) The bulb will change colour 10) Adding a resistor to a circuit will... a) Increase the flow of current b) Restrict the flow of current c) Have no effect d) Make the bulb brighter 11) A resistor usually changes electrical energy into what kind of energy? a) Heat b) Light c) Potential d) Chemical 12) What type of circuit is shown here? a) A bulb circuit b) A simple circuit c) A series circuit d) A parallel circuit 13) Current is always ___________ in a series circuit? a) The same b) Different c) 1.0 A d) Milliamps 14) Resistance is measured in...? a) Amps b) Amperes c) Ohms d) Volts 15) The mains supply voltage is 0.230 kV. What is this in Volts? a) 23 V b) 2.3 V c) 2300 V d) 230 V 16) What is the symbol for an Ohmmeter? a) b) c) d) 17) What effect would taking the resistor out of the circuit have on the bulb? a) The bulb would see no effect b) The bulb would get brighter c) The bulb would get dimmer d) The bulb would turn off 18) Name two safety feature found in electrical appliances a) A fuse and a switch b) A fuse and an earth wire c) An earth wire and a switch d) An earth wire and a fuse 19) If too much current goes through a fuse it will _________? a) Melt and break the circuit b) Melt and connect the circuit c) have no effect d) Make a noise 20) We use __________ to measure voltage a) An ammeter b) A Voltmeter c) An Ohmeter d) A Power supply 21) Name the three wires found in a plug a) Live, Earth & Neutral b) Live, Earth & Negative c) Earth, Wind & Fire d) Light, Earth & Neutral 22) What colour is the neutral wire? a) Blue b) Brown c) Green and Yellow d) Purple 23) Which wire in the plug acts as a safety device? a) Live b) Neutral c) Earth 24) What is the meter (on the left) measuring here? a) Current b) Voltage c) Resistance d) Energy 25) If we increase the resistance in a circuit, what happens to the current? a) It increases b) It decreases c) It stays the same d) It is negative 26) What is the voltage across lamp 1? a) 3 V b) 6 V c) 7 A d) 1.5 V 27) What is the current through lamp 2? a) 2 A b) 4 A c) 6 A d) 10 A 28) What is this component? a) A resistor b) A variable resistor c) A fuse d) A cell 29) A current carrying wire in a magnetic field experiences a force upwards. Which change will not cause the force to be changed downwards  a) Reversing the current b) Switching the poles of the magnet c) Adding another wire 30) What is the energy change in an electric heater? a) Electric to heat b) Electric to light c) Electric to heat and light d) Electric to sound

Electricity and Magnetism Revision

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