Chapter 6 - Circuits

Question 1

Current

Answer 1

Flow of positive charge

Question 2

Direct current (DC)

Answer 2

Charge flows in one direction

Question 3

Alternating current (AC)

Answer 3

Flow changes direction periodically

Question 4

Electromotive Force

Answer 4

No charge is moving between he 2 terminals of the cell that are at different potential values

Question 5

Kirchoff’s Laws

Answer 5

Deal with conservation of charge and energy within a circuit

Question 6

Junction Rule

Answer 6

At any point or junction in a circuit, the sum of currents directed into that point equals the sum of currents directed away

Question 7

Loop Rule

Answer 7

Around any closed-circuit loop, the sum of voltage sources will always be equal to the sum of voltage drops

Question 8

Resistance

Answer 8

Opposition within any material to the movement and flow of charge

Question 9

Ohm’s Law

Answer 9

For a given magnitude of resistance, the voltage drop across the resistor will be proportional to the magnitude of the current

Question 10

Resistor : Series

Answer 10

All current must pass sequentially through each resistor connected in a linear arrangement

Question 11

Resistors: Parallel

Answer 11

Current will divide to pass through resistors separately

Question 12

Capacitors

Answer 12

Characterized by ability to hold charge at a particular voltage

Question 13

Capacitance

Answer 13

The ratio of the magnitude of the charge stored on one plate to the potential difference (voltage) across the capacitor

Question 14

Ammeters

Answer 14

Measure current at some point within a circuit
- Zero resistance, no voltage drop

Question 15

Voltmeters

Answer 15

Requires active circuit; uses magnetic properties of current-carrying wires
- voltage drop across 2 points

Question 16

Ohmmeters

Answer 16

Does not require circuit to be active
- own battery of voltage