Calculating values in circuits

Question 1

Describe current (I) in series circuits

Answer 1

The SAME at all points in the circuit

Question 2

Describe current (I) in parallel circuits

Answer 2

Current is additive

Question 3

Why is current additive in parallel circuits?

Answer 3

Because each junction offers a different flow of electrons

Question 4

Describe series circuits

Answer 4

• All components are connected end to end
• There are NO branching points
• Current flows in one path

Question 5

Describe parallel circuits

Answer 5

• A circuit that contains at least one junction

- Current intensity is shared among the various resistors in the circuit

Question 6

Describe Kirchhoff’s Law

Answer 6

The current that flows into a node (junction point) in a circuit is always equal to the current that flows out of the node

I in = I out

Question 7

What is the formula for current in SERIES

Answer 7

It=I1=I2=….

Question 8

What is formula for voltage in SERIES

Answer 8

Vt=V1+V2+….

• The sum of voltage drop across each resistor is equal to Vt

Question 9

What is the formula for resistance in SERIES

Answer 9

Rt=R1+R2+….

Question 10

Practice calculations

Answer 10

do it

Question 11

What is the formula for current in PARALLEL

Answer 11

It=I1+I2+….

Question 12

What is the formula for voltage in PARALLEL

Answer 12

Vt=V1=V2=….

Question 13

What is the formula for resistance in PARALLEL

Answer 13

1/Rt=1/R1+1/R2+…

the more resistors added, the lower the Rt