# Electricity - Generator - Transformer Quiz - gcsescience.com.

 1. A wire in a changing magnetic field will havea) Positive energy b) Positive volts c) An induced current d) A negative current
 2. A magnet is moving towards a coil of wire and a galvanometer       shows that current is flowing. The current can be made greater       in the following three ways.a) Use more turns of wire, a bigger magnet         and move the magnet faster b) Use more turns of wire, a stronger magnet         and move the magnet faster c) Use less turns of thinner wire, a stronger magnet         and move the magnet slower d) Use the same number of turns of wire, a bigger magnet         and move the magnet slower
 3. A generatora) Generates useful kinetic energy b) Generates gravitational potential energy c) Transfers electrical energy into kinetic energy d) Transfers kinetic energy into electrical energy
 4. A generator produces alternating current.     If the generator is turned faster, the alternating currenta) Is positive only b) Is negative only c) Has a bigger voltage and a bigger frequency d) Has a bigger amplitude and a lower frequency
 5. When a magnet turns inside a coil of wirea) The wire has an alternating current b) The wire has a direct current c) The wire has no current d) The wire has direct frequency
 6. A transformera) Always works using direct current b) Always produces direct current c) Always works using alternating current d) Always decreases the voltage
 7. A transformer that decreases the voltagea) Makes direct current like a battery b) Decreases the current c) Decreases the power d) Increases the current

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