What electrical component opposes the flow of current in a DC circuit?

1. A Inductor
2. B Resistor
3. C Inverter
4. D Transformer

What type of component is often used as an adjustable volume control?

1. A Fixed resistor
2. B Power resistor
3. C Potentiometer
4. D Transformer

What electrical parameter is controlled by a potentiometer?

1. A Inductance
2. B Resistance
3. C Capacitance
4. D Field strength

What electrical component stores energy in an electric field?

1. A Resistor
2. B Capacitor
3. C Inductor
4. D Diode

What type of electrical component consists of conductive surfaces separated by an insulator?

1. A Resistor
2. B Potentiometer
3. C Oscillator
4. D Capacitor

What type of electrical component stores energy in a magnetic field?

1. A Resistor
2. B Capacitor
3. C Inductor
4. D Diode

What electrical component is typically constructed as a coil of wire?

1. A Transistor
2. B Capacitor
3. C Diode
4. D Inductor

What is the function of an SPDT switch?

1. A A single circuit is opened or closed
2. B Two circuits are opened or closed
3. C A single circuit is switched between one of two other circuits
4. D Two circuits are each switched between one of two other circuits

What type of switch is represented by component 3 in figure T-2?

1. A Single-pole single-throw
2. B Single-pole double-throw
3. C Double-pole single-throw
4. D Double-pole double-throw

Which of the following battery chemistries is rechargeable?

1. A Nickel-metal hydride
2. B Lithium-ion
3. C Lead-acid
4. D All these choices are correct

Which of the following battery chemistries is not rechargeable?

1. A Nickel-cadmium
2. B Carbon-zinc
3. C Lead-acid
4. D Lithium-ion