Test on electricityOnline version Answer the questions about electricity by Yolanda Sánchez 1 The atom is composed of neutrons, protons and electrons. Electrons are in the nucleus. a True b False 2 Electrons are positively charged. a True b False 3 Protons are positively charged. a True b False 4 The flow of electrons through a conductive material is called electric current. a True b False 5 An electric circuit is a series of interconnected components through which an electric current flows. a True b False 6 An electric circuit only produces light. a True b False 7 Push switches open or close the circuit, but only while we keep them pressed. a True b False 8 A potentiometer is a component used for opening or closing a circuit. a True b False 9 A two-way switch opens or closes the circuit, but only while we keep it pressed. a True b False 10 A fuse protects the components of electric circuits from power surges. a True b False 11 A LED converts electrical energy into sound energy. a True b False 12 A power source allows or prevents the flow of electric current. a True b False 13 A resistor limits the flow of electrical current through a circuit. a True b False 14 A buzzer converts electrical energy into movement. a True b False 15 A limit switch functions as a switch that toggles between two positions when it is operated by a lever a True b False 16 This symbol represents a lamp. a True b False 17 This symbol represents a two-way switch. a True b False 18 This symbol represents a NC push switch (Normally Closed). a True b False 19 This symbol represents a resistor. a True b False 20 The unit used to measure the intensity of the current is the Volt (V). a True b False 21 The unit used to measure the resistance is the Ohm (Ω). a True b False 22 The Resistance is the energy supplied by a power source. a True b False 23 La Ley de Ohm dice que V = I x R a True b False 24 According to the Ohm´s Law: I = R / V a True b False 25 In a series circuit, there is only one possible path for the current. a True b False 26 In a parallel circuit, there is only one possible path for the current a True b False 27 In a parallel circuit, the same current flows through all the load devices. a True b False 28 In a series circuit, if one load device stops working, none of them will work. a True b False 29 In a parallel circuit, if one load device stops working, none of them will work. a True b False 30 In a series-parallel circuit, there are elements in series and elements in parallel. a True b False
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