Electric Circuits - Bow Valley College
Electric Circuits - Bow Valley College
Electric Circuits - Bow Valley College
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Find:<br />
(a) total resistance<br />
(b) total current<br />
(c) Vdrop at R1, R2, R3, R4<br />
(d) current at R3<br />
(a) RT = R1 + R2 + R3 + R4<br />
RT = 5.0 + 7.0 + 9.0 + 11<br />
RT = 32<br />
(b) VT = IRT<br />
24V = I (32 )<br />
I = 0.75A<br />
(c) Vdrop at R1<br />
Vdrop= IR<br />
Vdrop = (0.75A) (5.0 )<br />
Vdrop = 3.75V<br />
Vdrop at R3<br />
Vdrop= IR<br />
Vdrop = (0.75A) (9.0 )<br />
Vdrop = 6.75V<br />
CHECK: VT = Vl + V2 +V3 +V4<br />
VT = 3.75V + 5.25V + 6.75V + 8.25V<br />
VT = 24V<br />
(d) I = 0.75A (Current is constant in a series circuit)<br />
V = IR<br />
VT= V1 = V2 =<br />
V3<br />
1 = 1 + 1 +<br />
1<br />
RT R1 R2<br />
Parallel <strong>Circuits</strong><br />
Vdrop at R2<br />
Vdrop= IR<br />
Vdrop = (0.75A) (7.0 )<br />
Vdrop = 5.25V<br />
Vdrop at R4<br />
Vdrop= IR<br />
Vdrop = (0.75A) (11 )<br />
Vdrop = 8.25V<br />
Voltage across each resistor is the same in a parallel<br />
circuit.
Change language