Exam 2: Voltage, Current, and Resistance

Electrons have a positive charge.

-Which switch in Figure 2 -1 could be used to switch two inputs to different output positions?

Electrolysis

Resistance is the opposition to the flow of current.

-What does the schematic symbol (b)represent in Figure 2 -3?

An analog meter has .

A conductor is a material that has .

The Nickel -Metal Hydride battery is an example of a secondary battery.

Which of the following is not a type of variable resistor?

A common type of resistors are:

A resistor color coded with yellow, violet and orange bands has a value of 4.7 kΩ.

-the voltage VFG is the same as .

-Which switch in Figure 2 -1 could be used to open a circuit momentarily?

A generator converts electrical energy into mechanical energy.

A 100 kΩ ±10% resistor is color coded .

The ohm is the basic unit of resistance.

An insulator is a material with .

If a resistor is color coded with orange, orange, orange and silver bands, the resistance equals , the lower tolerance limit equals and the upper tolerance limit equals .

An element with a relatively large amount of electrons in the valence ring is considered to be a good conductor.

Which unit of charge contains 6.25 × 1018 electrons?