Unit 2: Electrical Quantities and Ohm’s Law Flashcards Preview

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Flashcards in Unit 2: Electrical Quantities and Ohm’s Law Deck (7)
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1
Q

What is a coulomb?

A

The coulomb is a measure of charge. 1 coulomb is equal to 6.24 x 10^18 electrons.

2
Q

What is an ampere?

A

The ampere is a measurement of the amount of electricity that is flowing through a circuit. The ampere (A) is equal to 1 coulomb per second.

3
Q

Define voltage.

A

Voltage is defined as the potential difference between two points of a conducting wire carry- ing a constant current of 1 ampere when the power dissipated between these points is 1 watt. Voltage is also referred to as potential difference or electromotive force (EMF).

4
Q

Define ohm.

A

An ohm (Ω) is the unit of resistance to current flow. An ohm is the amount of resistance that allows 1 ampere of current to flow when the applied voltage is 1 volt.

5
Q

Define watt.

A

Wattage is a measure of the amount of power that is being used in a circuit.

6
Q

What is Ohm’s Law?

A

E = I x R Voltage = Current x Resistance

7
Q

What is Power Law?

A

P = I x E Power = Current x Voltage