Series and Parallel Circuits*

In series circuit, there is only _____ path for electrons to flow.

• One

• Two

• Three

• Four

If one of the light bulb in series circuit is taken off, what will happen to the other light bulb?

• The other light bulb will be on

• The other light bulb will be off

• The other light bulb will stay on

• Both light bulb will be on

In parallel circuit, there are _________ pathways for charge to flow.

• One

• Two or more

• None

• Zero

In a parallel circuit, if we remove one of the light bulb, what will happen to the other light bulb?

• The other light bulb will stay on.

• The other light bulb will be off

• Both light bulb will be on

• Both light bulb will be off

If we add more light bulbs into a parallel circuit, how will the brightness of the bulbs change?

• It will get dimmer

• It will get brighter

• The brightness will stay the same

• None of the light bulb will be on

The diagram shows a circuit containing three ammeters P, Q and R.

Which statement about the readings on the ammeters is correct?

• The reading on P is equal to the reading on Q.

• The reading on P is equal to the reading on R.

• The reading on Q is greater than the reading on P.

• The reading on Q is greater than the reading on R.

Resistors of resistance 1.0Ω, 2.0Ω and 3.0Ω are connected in parallel across the terminals of a cell.

Which statement is correct?

• The currents in the resistors are equal.

• The sum of the currents in the three resistors is equal to the current in the cell.

• The sum of the potential differences (p.d.’s) across the resistors is equal to the electromotive force (e.m.f.) of the cell.

• The potential difference across the 3.0Ω resistor is greater than the potential difference across the other two resistors.

The diagram shows a circuit including a lamp, an electric bell and three switches S1, S2 and S3. The lamp and bell are not faulty.

The bell is ringing but the lamp is not lit. Which switches are closed?

• S1 only

• S1 and S2 only

• S1 and S3 only

• S1, S2 and S3

In ------------- bulbs are dimmer.

• Parallel circuit

• series circuit

• circuits

• None of the above

Voltage is current __________ resistance.

• multiplied by

• divided by

• subtracted by

• None of the above