1) Ohm's law states that a) The current through a conductor decreases when the voltage increases b) The current through a conductor is inversly proportional to the voltage accross it c) The current through a conductor is proportional to the voltage d) The currents in a cake are proportional to the size of cake 2) What happens to the overall resistance as more resistors are added in parallel to a circuit? a) Increases b) Decreases c) Stays the same 3) The e.m.f of a battery is defined as a) The equivalent marmalade mass produced by an enourmous marmalade frog of equal power b) The energy difference of the charges before and after entering the battery c) The total sum of all the voltages in the external circuit d) The total amount of energy supplied to each unit of charge 4) What is internal resistance? a) The resistance of the power supply b) The resistance of the inside of any component c) Something that can hold you back from what you really want to do inside d) The resistance created by individual electrons 5) Charge per second is the definition for a) current b) potential difference c) power d) work done e) resistance f) resistivity 6) power is defined as a) the difference in energy of a unit of charge after it has passed through a component b) the energy transferred per unit of charge c) the energy transferred per second d) the Hulk 7) A diode has low resistance in one direction but very high resistance in the other a) True b) False 8) The kilowatt-hour is defined as a) The energy supplied per hour b) A unit for measuring energy used c) A unit for measuring power used d) A heavy timed question 9) The voltage increases as the resistance increases a) True b) False 10) The current increases as the resistance increases a) True b) False 11) You will get maximum power from a power supply when a) The overall resistance is lowest b) The overall resistance is highest c) Internal resistance higher than external resistance d) Internal resistance lower than external resistance e) Internal resistance equal to external resistance 12) If you added more power supplies in parallel the voltage accross the components in the circuit would a) Increase b) Decrease c) Stay the same d) melon e) kiwi f) dragon fruit

G482 Revision 2

by Anonymous
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