Circuits and Ohm's Law

Battery

Bulb

Switch

Resistor

Series Circuits

Parallel circuits

All elements in the circuit are in one loop

Every electron flow through every element

If one bulb burned out, the rest would also go out

There are several pathways or loops through the circuit

Electrons flow through just one of those pathways

If one bulb burned out, the rest of the bulbs would still glow

Shows the relationship between current, voltage, and resistance

V is for VOLTAGE (volts)

I is for CURRENT (amps)

R is for RESISTANCE (ohms)

Comes from the battery or another voltage source

The "push" that moves electrons around the circuit

Think of it like a water pump - without the pump, the water would just sit in the pipe and not move anywhere

Electrons in the circuit flowing or moving around the circuit

Measured in amps

When electrons move faster, the current is greater

Like the water flowing through a pipe

Makes it harder for electrons to flow through the circuit

Measured in Ohms

Kind of like friction or sand that slows the water in the pipe down

There are 4 amps of current flowing through a circuit with 2 ohms of resistance. How much voltage did the battery provide?

There are 4 amps of current flowing through a circuit with a 12 volt battery. How much resistance is in the circuit?

How much current would flow through a circuit with 25 ohms of resistance and 100 volt battery?