10 - Electrical Circuits

Question 1

Conservation of Energy

Answer 1

Energy cannot be created or destroyed, only transferred.

Question 2

Internal Resistance

Answer 2

The resistance within a power source, causing energy dissipation.

Question 3

Kirchhoff’s Second Law

Answer 3

The sum of the voltages in a closed loop equals zero.

Question 4

Lost Volts

Answer 4

The voltage drop across the internal resistance of a source.

Question 5

Parallel Circuit

Answer 5

Components connected in parallel have the same potential difference.

Question 6

Potential Divider

Answer 6

A circuit arrangement that splits a voltage in proportion to resistances.

Question 7

Resistors in Parallel

Answer 7

The total resistance is the inverse of the sum of inverses of individual resistances.

Question 8

Resistors in Series

Answer 8

The total resistance is the sum of individual resistances.

Question 9

Sensor Circuits

Answer 9

Circuits that react to changes in external conditions.

Question 10

Series Circuit

Answer 10

Components connected end-to-end, sharing the same current.

Question 11

Terminal PD

Answer 11

The potential difference across the terminals of a power source. It is equal to the source’s emf minus any voltage drop over the source’s internal resistance.