1) A transistor helps amplify electrical current. a) True b) False 2) Fuel is not needed for any electronic devices to work. a) True b) False 3) Semiconductors stop electricity completely. a) True b) False 4) A circuit allows electricity to flow in a controlled path. a) True b) False 5) Diodes can help prevent electricity from flowing in the wrong direction. a) True b) False 6) Electrical current flows through semiconductors and capacitors in a circuit. a) True b) False 7) A capacitor can store energy for the circuit. a) True b) False 8) A transistor prevents electricity from flowing. a) True b) False 9) Semiconductors are not used in amplifiers. a) True b) False 10) Amplifiers allow us to enjoy clear sound. a) True b) False

Electrical Systems 3

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