Practice # 2 Current, Voltage, Resistance, Components

Front

What is the direction of conventional current flow?

Back

Conventional current flows from positive to negative.

Front

According to electron flow theory, where do electrons flow from?

Back

Electrons flow from a negatively charged source to positive.

Front

What is the most common form of converting chemical energy into electricity?

Back

The most common form is a battery.

Front

What determines the amount of current that flows under a given voltage in a conductor?

Back

The resistance of the conductor determines the amount of current.

Front

What is the term for the percentage variation between the marked value and the actual value of a resistor?

Back

The term is tolerance.

Front

Define electrical current.

Back

Electrical current is the flow of electric charge, typically measured in amperes.

Front

What is voltage and how is it measured?

Back

Voltage is the electric potential difference between two points, measured in volts.

Front

What is resistance and what unit is it measured in?

Back

Resistance is the opposition to the flow of 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 and inversely proportional to the resistance (I = V/R).

Front

What is the relationship between current, voltage, and resistance in a circuit?

Back

The relationship is defined by Ohm's Law: I = V/R.