Electricity and Circuits Test Review

Front

In a parallel circuit, what remains the same across each element?

Back

Voltage remains the same across each element in a parallel circuit.

Front

What is an electromagnet?

Back

An electromagnet is a material that becomes a magnet only when electricity is applied.

Front

What is the total voltage in a circuit?

Back

The total voltage is the sum of the voltages across each component in the circuit.

Front

What type of circuit allows other light bulbs to continue glowing if one goes out?

Back

A parallel circuit allows other light bulbs to continue glowing if one goes out.

Front

Calculate the total resistance in a circuit with a 10 ohm and a 20 ohm resistor in parallel.

Back

The total resistance is 6.7 ohms.

Front

What is the unit of electrical resistance?

Back

The unit of electrical resistance is the ohm (Ω).

Front

What is Ohm's Law?

Back

Ohm's Law states that V = I × R, where V is voltage, I is current, and R is resistance.

Front

What happens to the total current in a parallel circuit?

Back

The total current in a parallel circuit is the sum of the currents through each parallel branch.

Front

Define voltage.

Back

Voltage is the electric potential difference between two points in a circuit.

Front

What is the role of a resistor in a circuit?

Back

A resistor limits the flow of electric current in a circuit.