DC & capacitor

What is current measured in?

• Ω (Ohms)

• V (Volts)

• A (Ampere)

• W (Watts)

Current is...

• moving protons
• moving electrons
• measured in volts
• measured in ohms

Good conductors are _______ resistors

• bad
• good

Good insulators are _______ resistors

• good
• bad

Define electric current.

• It is the work done by the source in driving charges around a complete circuit.

• It is a measure of the rate of flow of electric charge through a given cross sectional area of a conductor.

• It is the work done by the source in driving a unit charge around a complete circuit.

• It is a measure of the flow of electric charge through a given cross sectional area of a conductor.

What type of quantity does the current belongs to?

• a base and vector quantities

• a base and scalar quantities

• a derived and vector quantities

• a derived and scalar quantities

From the equation, we know that the resistance of a conductor is independent on..?

• length of conductor

• cross sectional area

• type of material

• volume of the wire

State Ohm's Law.

• the potential difference across a metallic conductor is proportional to the resistance flowing through it if its temperature is constant.

• the resistance across a metallic conductor is proportional to the current flowing through it if its temperature is constant.

• the potential difference across a metallic conductor is proportional to the current flowing through it if its temperature is constant.

• the current across a metallic conductor is proportional to the potential difference flowing through it if its temperature is constant.

Which equation defines Ohm's Law?

• V=IV

• R=VI

• I=VR

• V=IR

Quantity of charge can be measured in

• time (s)

• Ampere (A)

• coulombs (C)

• Joule (J)