Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

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Chapter 6 Chapter 6 Ohm’s Law, Work, Energy Ohm’s Law, Work, Energy and Power and Power

Transcript of Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

Page 1: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

Chapter 6Chapter 6

Ohm’s Law, Work, Energy and Ohm’s Law, Work, Energy and PowerPower

Page 2: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

16 V

Page 3: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

8 V

Page 4: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

1 V

Page 5: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

16 uV

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7 V

Page 7: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

20V

Page 8: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

V = ? V

I = 3 mA

R = 2 kΩ6V

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V = ? V

I = 5 nA

R = 1.5 GΩ7.5V

Page 10: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

V = ? V

I = 5 A

R = 1.5 Ω7.5V

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V = 6 V

I = 3 A

R = ? Ω2 Ohms

Page 12: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

V = 6 V

I = 3 A

R = ? KΩ.002 Kohms

Page 13: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

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Page 14: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

Now Use your Calculator

See page 91 in book

Do Example 6.2

Page 15: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

V = 6 V

I = ? A

R = 3 Ω

Using your Calculator

2 Amps

Page 16: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

V = 6 V

I = ? mA

R = 3 Ω

Using your Calculator

2000 mA

Page 17: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

V = 10 mV

I = 2 mA

R = ? mΩ

Using your Calculator

5000 mOhms

Page 18: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

V = 10 mV

I = 2 mA

R = ? Ω

Using your Calculator

5 Ohms

Page 19: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

V = 10 mV

I = 2 mA

R = ? MΩ

Using your Calculator

.000005 MOhms

Page 20: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

V = 10 x 10-4V

I = 2 mA

R = ? MΩ

Using your Calculator

.0000005 MOhm

5 x 10^-7 MOhm

Page 21: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

V = 10 x 10-4V

I = 2 x 10-3A

R = ? MΩ

Using your Calculator

.0000005 MOhm

5 x 10^-7 MOhm

Page 22: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

WorkWhat is work?

Motion must take place for work to take place

What is the unit for work?

Joule (J)(This is also the same unit for Energy)

Work takes place when electrical energy is converted to mechanical energy and vice versa

What about electrical work? (no motion involved?)

1 Joule = Energy required to raise 1 Coulomb of charge through a potential difference of 1 Volt

Page 23: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

Work

What is the equation for work?

W = Q * V

Work = Charge * Voltage

Joules = Coulombs * Volts

Page 24: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

Power

What is Power?

W = Q * V

Power is how much work can be done in a specific amount of time

(Like MPH)

Units for Power is Watts (W)

(Like MPH)

Page 25: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

Power

Equation for Power

Power = Voltage * Current

(Like MPH)Power = Work / Time

P = V * I

Page 26: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

Power

See how Power also equals:

P = V2/R

P = I2 * R

Page 27: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

Power

P = ? Watts

I = 6 Amps

V = 3 Volts

P = V2/RP = I2 * R

P = V * I

P = 18 Watts

Page 28: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

Power

P = 18 Watts

I = 6 Amps

V = 3 Volts

P = V2/RP = I2 * R

P = V * I

R = ? Ω R = .5 Ohms

Page 29: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

Power

P = ? Watts

I = 5 Amps

V = ? Volts

P = V2/RP = I2 * R

P = V * I

R = 10 Ohms P = 250 Watts

V = 50 Volts

Page 30: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

Power

P = ? Watts

V = 3 Volts

P = V2/RP = I2 * R

P = V * I

R = 9 Ω

P = 1 Watts

Page 31: Chapter 6 Ohm’s Law, Work, Energy and Power. 16 V.

Power

P = 32 Watts

P = V2/RP = I2 * R

P = V * I

R = 2 ΩI = ? A

I = 4 Amps