Physical Science Unit 4 Review

Front

What is the current in a series circuit?

Back

The current is the same throughout the circuit.

Front

What happens to current if voltage stays the same and resistance increases?

Back

The current will decrease.

Front

What is the formula to calculate voltage?

Back

Voltage (V) = Current (I) × Resistance (R).

Front

What voltage is needed to produce 2 Amps of current through a 10Ω resistor?

Back

20V.

Front

How do you calculate current in a circuit with a 1.5V battery and two 5Ω resistors?

Back

Current (I) = Voltage (V) / Total Resistance (R). Total Resistance = 5Ω + 5Ω = 10Ω, so I = 1.5V / 10Ω = 0.15 amps.

Front

What is static electricity?

Back

The accumulation of excess electric charge on an object.

Front

What is resistance in an electrical circuit?

Back

Resistance is a measure of the opposition to the flow of electric current, measured in Ohms (Ω).

Front

What is the unit of electric current?

Back

The unit of electric current is the Ampere (A).

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 of the conductor.

Front

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

Back

Voltage = Current × Resistance (V = I × R).