Class 9 Science | Electromotive Force (e.m.f.) and Potential Difference (p.d.)

Science Class 9 · Unit 11 Electricity

Electromotive Force and Potential Difference

e.m.f. · p.d. · Voltmeter

What we will be able to do

🔋

Define e.m.f.

💡

Define p.d. and use its formula

📟

Measure both with a voltmeter

⚖️

Tell e.m.f. and p.d. apart

“

Why does water only flow from high to low, and what would make it flow again?

The notes are free to read in full.

Presenter notes: Today we find out how much energy a cell gives to charge and where that energy is spent.