Exploring Electric Current Concepts

The video tutorial covers the concept of electric current, explaining its measurement in amperes and the movement of electrons. It discusses the role of voltage difference in current flow and the necessity of a closed circuit for electricity to function. The tutorial also explains how batteries convert chemical energy to electrical energy, enabling current flow. Resistance is introduced as a factor opposing current flow, and Ohm's Law is presented to relate current, voltage, and resistance. An example problem is solved to demonstrate the application of Ohm's Law.

What is the unit of measurement for electric current?

• Volt

• Watt

• Ampere

• Ohm

How do electrons move?

• In pairs, holding hands

• In a circular motion

• In a straight line

• Randomly, like bouncy balls

Tags

NGSS.HS-PS2-5

What creates the push that causes charges to move?

• Battery size

• Voltage difference

• Wire length

• Resistance

What is necessary for electric charge to flow?

• An open circuit

• A closed circuit

• High resistance

• Low voltage

What does a battery convert?

• Electrical energy to chemical energy

• Chemical energy to electrical energy

• Mechanical energy to electrical energy

• Electrical energy to mechanical energy

Tags

NGSS.HS-PS3-3

What unit is resistance measured in?

• Volt

• Ohm

• Watt

• Ampere

Which factor does NOT affect resistance?

• Wire length

• Color of the wire

• Material type

• Temperature of the wire

According to Ohm's law, what happens if the voltage increases?

• Resistance increases

• Current increases

• Current decreases

• Resistance decreases

What is the formula for Ohm's law as rearranged by the teacher?

• V = I/R

• I = V/R

• R = V/I

• V = IR

What is the voltage difference through a wire if the current is 0.75 amps and resistance is 10 ohms?

• 750 Volts

• 75 Volts

• 0.075 Volts

• 7.5 Volts