section 5 a. before adding wire b. after adding wire

Section 5

A. BEFORE ADDING WIRE B. AFTER ADDING WIRE

5.3

Figure 5.3a Figure 5.3b

5.7

R-O

B-G

This is what happens between 5.7a and 5.7b

Y

R

B

Y

Y

Y

R

B

R

B

6.2 Testing the Voltmeter Quantitatively

6.2 cont.

6.4 Voltmeter

V

VSymbol:

Measures: Pressure Difference (V)

Connect: in Parallel

Turn OFF when finished.

+

-

200m

200K 200n

20M

2M

200K

20K

2K200

2m

200m

OFFLOGIC

PNP

20n

2u

20u

20K

AC750

20m10A

COMmA10A

2

20

200

DC1000

2K 2nOFFHz

200M

cx

200uA

V FDC

AC

NPN

E B

E

C E

10AMAX

200mAMAX

DC1000VAC700V

MAXLOGIC

(+)

!!!

VHz

HFE

500V MAX

6.4 Voltmeter

V

VSymbol:

Measures: Pressure Difference (V)

Connect: in Parallel

Turn OFF when finished.

+

-

200m

200K 200n

20M

2M

200K

20K

2K200

2m

200m

OFFLOGIC

PNP

20n

2u

20u

20K

AC750

20m10A

COMmA10A

2

20

200

DC1000

2K 2nOFFHz

200M

cx

200uA

V FDC

AC

NPN

E B

E

C E

10AMAX

200mAMAX

DC1000VAC700V

MAXLOGIC

(+)

!!!

VHz

HFE

500V MAX

6.6 Pressure difference during charging and discharching

6.6 Pressure difference during charging and discharching

6.7 Ammeter

ASymbol:

Measures: Flow Rate/Current (A)

Connect: in Series

Turn OFF when finished.

+

-

6.9 Testing the ammeter in parallel circuits

6.12 Measuring Resistance

6.12 Measuring Resistance

6.12 Measuring ResistanceRx

Voltage (V)

Current (A)

Resistance ()

1.28 0.14 9.14

2.64 0.27 9.78

3.77 0.38 9.92

Voltage v. Current for Rx

y = 10.378x - 0.1694

R2 = 1

0

0.5

1

1.5

2

2.5

3

3.5

4

0 0.1 0.2 0.3 0.4

Current (A)

Vo

lta

ge

(V

)

6.12 Measuring Resistance

Voltage v. Resistance for Rx

0.00

2.00

4.00

6.00

8.00

10.00

12.00

0 1 2 3 4

Resistance ()

Vo

ltag

e (V

)

Rx

Voltage (V)

Current (A)

Resistance ()

1.28 0.14 9.14

2.64 0.27 9.78

3.77 0.38 9.92

6.13 Resistance of a Long Bulb

Voltage (V)

Current (A)

Resistance ()

1.38 0.05 27.60

2.76 0.07 39.43

4.13 0.08 51.63

Voltage v. Current for Long Bulb

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

0 0.02 0.04 0.06 0.08 0.1

Current (A)

Vo

lta

ge

(V

)

6.13 Resistance of a Long Bulb

Voltage (V)

Current (A)

Resistance ()

1.38 0.05 27.60

2.76 0.07 39.43

4.13 0.08 51.63

Resistance v. Voltage for Long Bulb

y = 8.7362x + 15.469

R2 = 0.9999

0.00

10.00

20.00

30.00

40.00

50.00

60.00

0 1 2 3 4 5

Voltage (V)

Res

ista

nce

(

)

6.14 “Equivalent Resistance”

6.15 Equivalent resistance for parallel and series combinations

Model Building Discussion

Model Building Discussion – cont.

Model Building Discussion – cont.

VI

r

V rI

V = if there is no current through the battery

V < if there is driving current in a circuit

For backward flow: V rI

6.18

P = ____

I = ____

V = ____

8

4

2

6.18

P = ____

I = ____

V = ____

6

2

3

6.18 Power

P = ____

I = ____

V = ____

6

2

3

P = ____

I = ____

V = ____

= x 8

4

2

= x

P = I · V

6.19 Power Input vs. Power Output

TOTALS

Round Bulb

Long Bulb

Battery

PowerInput to

Each Bulb

PowerOutput from

BatteryIV

Circuit Components

6.20 Circuit with more than one battery

TOTALS

Bulb

??Single Cell

2 Cell Battery

Power

Receiving

Power

GivingIV

Circuit Components

OR

Section 7.7

The direction of a magnetic field can be seen by placing a compass near a bar magnet. The North pole of the compass points in the direction of the field, away from North and towards South. The magnetic field can also be seen by placing the magnet under a piece of paper and sprinkling small iron filings on top. The filings line up in the shape of the field, as shown at right.

Section 7.7

Section 7.7

The North pole of a compass points to the Earth's geographic North Pole, which means that there must be a magnetic South Pole up there.

Section 7.7

Magnetic Field of a bar magnet.