# Laboratory 1 – DC Circuits

 Maltimeter reading A 9.96 ohms B 9.99 ohms C 5.56 ohms D 4.67 ohms

We connected the resistor to bread board battery EMF 8.70 v

The battery is connected to the bred board

 EMF for A 1.29V Emf for B 2.31 v Emf for C 4.20 v Emf for D 2.83 v Current by using multimeter   0.22 mA

A/ Emf for parallel circut 6.03v

B/ find the currant

Finding the battery current by using mulitmeter / 2.85 mA

Resistors current

1. 42 mA
2. 95 mA
3. 19 mA

c/

0.42 +0.95 +1.19 = 2.56 mA

d/

1/9.96 +1/5.56 +1/4.67 =2.022 K ohms

We find v by the help of multimeter which is 5.22v

I= V/R = 5.22/2.022=2.581 mA

Voltage and current for each different resistors

Voltage: 2.17v (5.56) ohms

Current : 0.6 mA

P=vI

2.17 x 0.6 = 1.302 w

V=1.95v

Current = 0.36 mA

(4.67)ohms

P=VI

=1.95 X 0.36 = 0.702 W

V=2.98V

I=0.28 mA

(9.96)ohms

P=VI

= 2.98 x 0.28

=0.8344 w

p(5)

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