phy1020.DVI

Table 17-1. Comparison of quantities in gravity and electricity. Quantity Gravity Electricity Uniform field Field strength gDcon ...

Chapter 18 The Battery There are many ways of creating an electrical potential; one of the simplest is thebattery, in which an e ...

a total potential of 12 V. Sometimes a single electrochemical system is called acell, with the word “battery” being reserved for ...

Chapter 19 Electric Current If we place a potential differenceVacross opposite ends of a conductor (a copper wire, for example), ...

Chapter 20 Resistance Suppose we apply a potential differenceVacross the ends of a conductor. If the conductor were to allow the ...

Figure 20.1: The resistor color code (4 bands). Table 20-1. Resistivities and Temperature Coefficients (atT 0 D 20 ıC). [10] Mat ...

Multiplying both sides of Eq. (20.2) byL=A, we see the resistance changes with temperature by a similar formula: RDR 0 Œ1C ̨.TT ...

Nequal resistorsRconnected in series have an equivalent resistance ofNR. For resistors connectedin parallel: The equivalent r ...

20.5 Battery Internal Resistance. A real battery contains aninternal resistanceto the flow of electricity that causes it to have ...

Table 20-2. American Wire Gauge (AWG). Gauge Diameter (in) Area (m^2 ) 0000 0.46000 1:07219 10 ^4 000 0.40964 8:50288 10 ^5 ...

Chapter 21 Ohm’s Law For many materials and devices (conductors and resisitors, for example), it is found that the greater the p ...

Chapter 22 DC Electric Circuits Electronic components like batteries and resistors may be combined into closed loops calledcircu ...

Battery Resistor Capacitor Inductor Switch Wire Ground Antenna Headphones Diode or Transformer Crystal (piezoelec.) Tele ...

Figure 22.2: Kirchhoff plots of two simple electric circuits.Left:A simple circuit with one loop. The resistor ris meant to mode ...

this currents splits at the fork with the two parallel resistors into two currents,I 2 +I 3. After passing through these two res ...

A third approach would be to use proportions to figure out how the current splits going through the two parallel resistors. Sin ...

For resistors in series, all resistors have the same current, but there will generally be a different voltage across each resis ...

Chapter 23 Kirchhoff’s Rules Examine the circuit shown in Fig. 23.1. You’ll note that the techniques we used in the previous cha ...

6 V 3 V R 1 =2 ohms R 2 =5 ohms R 3 =4 ohms R 4 =7 ohms R 5 =10 ohms I 1 I 3 I 2 Figure 23.1: Example circuit for analysis using ...

or, substituting the resistance values, I 1 .2/I 1 .5/C 3 VCI 2 .4/C 6 VD 0 (23.2) or, simplifying, I 1 .7/CI 2 .4/C 9 V ...