Day 2 Current

Front

What are the 4 factors affecting resistance in a circuit?

Back

Material, Length, Cross-sectional area, Temperature

Front

What is the effect called when electricity is generated in dielectric crystals subjected to mechanical stress?

Back

Piezoelectric effect

Front

What is a variable resistor controlled by light intensity called?

Back

Photoconductive cells

Front

How do you calculate the current (in Amps) in a circuit with a 24 volt battery and an 8 ohm resistor?

Back

Current (I) = Voltage (V) / Resistance (R) = 24V / 8Ω = 3 Amps

Front

What does the 4th band on a resistor represent?

Back

Tolerance level

Front

Define resistance in an electrical circuit.

Back

Resistance is the opposition to the flow of electric current, measured in ohms.

Front

What is Ohm's Law?

Back

Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

Front

What is the unit of electrical resistance?

Back

Ohm (Ω)

Front

What is the relationship between voltage, current, and resistance?

Back

Voltage (V) = Current (I) × Resistance (R) (Ohm's Law).

Front

What is a conductor?

Back

A conductor is a material that allows the flow of electric current, typically metals like copper and aluminum.