electromotive force
What is the SI unit of electromotive force?
Volt
Which device is used to measure electromotive force?
Voltmeter
What is the formula for electromotive force in a circuit?
V = IR + rI
Which material is commonly used in batteries to generate electromotive force?
Copper
What happens to electromotive force when resistance in a circuit increases?
EMF increases
Which law describes the relationship between electromotive force, current, and resistance in a circuit?
Ohm's Law
In a closed circuit, where is the electromotive force usually located?
At the positive terminal
What effect does temperature have on the electromotive force of a cell?
EMF decreases with higher temperatures
Which of the following is a source of electromotive force in a circuit?
Battery
What is the direction of the electromotive force in a battery when current flows through it?
Opposite to current flow