Electricity

Energy

Chemical -> Electrical -> Mechanical

Energy

Mechanics

Newton's 2nd Law

$$F=\frac{d(mv)}{dt}=ma$$

Work Energy

$$W=\int_{ds \in C}F \cdot ds=F \cdot s$$

Power

$$P=\frac{dW}{dt}=\frac{W}{t}=F\cdot v ~~or~~ \tau\cdot \omega$$

where $\tau$ is the torque and $\omega$ is the angular velocity.

Electricity

Ohm's Law

$$V=IR$$

Power

$$P=VI=(\frac{W}{Q})\cdot (\frac{Q}{t})$$

Where $\frac{W}{Q}$ is the definition of voltage and $\frac{Q}{t}$ is the definition of current.

Multimeter

Voltage Measurement

• $V\sim$ is to measure AC voltage.

Multimeter AC measurement

• and the below icon is to measure DC voltage

Multimeter DC measurement

Tips

1. Will we be given a breadboard and ask how to connect them to measure the current or voltage?