PS Electricity Unit Test

Front

What is a series circuit?

Back

A circuit where components are connected end-to-end, so that the current flows through each component in turn.

Front

What is a parallel circuit?

Back

A circuit where components are connected across common points or junctions, allowing multiple paths for current to flow.

Front

What is the formula to calculate current (I) in a circuit?

Back

I = V/R, where I is current in Amps, V is voltage in Volts, and R is resistance in Ohms.

Front

What does a switch do in a circuit?

Back

A switch controls the flow of current by opening (off) or closing (on) the circuit.

Front

What is voltage?

Back

Voltage is the electrical potential difference between two points in a circuit, measured in Volts.

Front

What is resistance?

Back

Resistance is a measure of 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 power?

Back

The unit of electrical power is the Watt (W), which is equal to one Joule per second.

Front

How do you calculate total resistance in a series circuit?

Back

In a series circuit, total resistance (R_total) is the sum of all individual resistances: R_total = R1 + R2 + R3 + ...

Front

How do you calculate total resistance in a parallel circuit?

Back

In a parallel circuit, the total resistance (R_total) can be calculated using the formula: 1/R_total = 1/R1 + 1/R2 + 1/R3 + ...