Circuits

Front

What is a circuit?

Back

A circuit is a closed loop of conductors through which an electrical current can flow.

Front

What is the total resistance of twenty 100 Ω resistors connected in parallel?

Back

5 Ohms

Front

Which statement does not characterize electrical conductors?

Back

Conductors have tightly bound outer electrons.

Front

What does Ohm's Law state?

Back

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

Front

What happens to other bulbs in a parallel circuit if one bulb is removed?

Back

The other bulbs will stay on since this is a parallel circuit.

Front

What is a resistor?

Back

A resistor is a device that resists the flow of electric current, providing a constant resistance.

Front

What is the unit of electrical resistance?

Back

The unit of electrical resistance is Ohm (Ω).

Front

What is the difference between series and parallel circuits?

Back

In a series circuit, components are connected end-to-end, while in a parallel circuit, components are connected across common points.

Front

What is the formula for calculating total resistance in a series circuit?

Back

The total resistance in a series circuit is the sum of all individual resistances: R_total = R1 + R2 + R3 + ...

Front

What is the formula for calculating total resistance in a parallel circuit?

Back

The total resistance in a parallel circuit is given by 1/R_total = 1/R1 + 1/R2 + 1/R3 + ...