Circuits

Question 1

Parallel resistance

Answer 1

(1/R + 1/R)^-1 = R

Question 2

Series resistance

Answer 2

R + R = R

Question 3

Ohmic

Answer 3

Linear

Question 4

Conservation of Energy

Answer 4

Tip

Question 5

Conservation of Electric Charge

Answer 5

Tip

Question 6

• As you go across a circuit V=0
• One big loop
• Add smaller loops until every circuit element is touched

Answer 6

Kirchhoff’s Law

Question 7

• V-IR-IR=0 (Make this equation for each loop)
• If you go through a battery from – to +, then I add the voltage
• If the direction of the loop is in the same direction as the I then subtract IR
• Sum of I
• Substitution

Answer 7

Loop rules

Question 8

Capacitors block _ voltage.

Answer 8

DC

Question 9

Each _ has a charge and its equal and opposite.

Answer 9

Plate

Question 10

_ is how much charge you can store between the two plates.

Answer 10

Capacitance

Question 11

_ is a material placed in between the plates of a capacitor that increases the capacitance (usually an insulator between two metal plates) and atoms are polarized and they align.

Answer 11

Dielectric

Question 12

_ means dielectric.

Answer 12

Insulating

Question 13

K = _ if its air.

Answer 13

1

Question 14

When _ is open no more charge can move (Q is constant).

Answer 14

Switch

Question 15

Series capacitance

Answer 15

(1/C + 1/C)^-1 = C

Question 16

_ has same current.

Answer 16

Series

Question 17

_ has same voltage.

Answer 17

Parallel

Question 18

Parallel capacitance

Answer 18

C + C = C

Question 19

Energy stored on a capacitor _ the work done to transfer the charge from one plate to the other.

Answer 19

Equals

Question 20

Current follows the path of least _.

Answer 20

Resistance

Question 21

Direction of current flows in the direction that the _ charge flow.

Answer 21

Positive

Question 22

Only one path for current to flow

Answer 22

Series

Question 23

Current is the same anywhere (Ia=Ib=Ic=…

Answer 23

Series

Question 24

Total voltage drop equals the voltage of the battery (Vtotal=Va+Vb+Vc+…)

Answer 24

Series

Question 25

The equivalent resistance equals the sum of the resistances of its parts (Rtotal=Ra+Rb+Rc+...)

Answer 25

Series

Question 26

Voltage across any resistor in series is equal to the product of the ratio of that resistor to the total resistance and the total voltage (Va/Vb=Ra/Rb)

Answer 26

Series

Question 27

More than one path of current flow

Answer 27

Parallel

Question 28

Voltage is the same everywhere (Va=Vb=Vc=...)

Answer 28

Parallel

Question 29

Total current is the sum of the currents through its branches (Itotal=Ia+Ib+Ic+...)

Answer 29

Parallel

Question 30

Resistance is the reciprocal of the sum of the reciprocals of the resistors that are in the circuit (1/Rtotal=1/Ra+1/Rb+1/Rc+...)

Answer 30

Parallel