Series and Parallel Circuits 2

A current of 6 A flows in a circuit as shown. The current splits up when it enters parallel branches of resistors.
What is the reading on the ammeter?
1. 1.5 A
2. 3 A
3. 12 A
4. 24 A
Some students set up the circuit shown to investigate how a variable resistor affects an electrical circuit.

How will the readings on the meters be affected as the resistance of the variable resistor is increased?
1. Ammeter reading: decrease; Voltmeter reading: decrease
2. Ammeter reading: decrease; Voltmeter reading: increase
3. Ammeter reading: increase; Voltmeter reading: decrease
4. Ammeter reading: increase; Voltmeter reading: increase
Two resistors are connected in series between + 6 V and 0 V wires.

The potential difference across one resistor is 4 V.

What is the potential difference across the other resistor?
1. 6 V
2. 4 V
3. 2 V
4. 0 V
In the circuit the reading on the ammeter is 2 A.
What is the value of the potential difference across resistor X?
1. 1.5 V
2. 2 V
3. 3 V
4. 6 V
The diagram shows ammeter readings in a circuit.
Which ammeter is showing a faulty reading?
1. A
2. B
3. C
4. D
The diagram shows the components of a lighter for a gas cooker.

Which circuit diagram for this lighter is correct?
1. A
2. B
3. C
4. D
The circuit was set up as shown in the diagram.

The reading on voltmeter V₂ was 4 V. What was the reading on voltmeter V₁?
1. 1 V
2. 2 V
3. 4 V
4. 6 V
A current flows in two resistors connected in series as shown in the diagram. A₁ and A₂ are the readings on the ammeters. V₁ and V₂ are the readings on the voltmeters.

Which of the followings correctly describes the ammeter and voltmeter readings?
1. Ammeter readings: A₁ is less than A₂; Voltmeter readings: V₁ is less than V₂
2. Ammeter readings: A₁ is less than A₂; Voltmeter readings: V₁ is greater than V₂
3. Ammeter readings: A₁1 is equal to A₂; Voltmeter readings: V₁ is less than V₂
4. Ammeter readings: A₁ is equal to A₂; Voltmeter readings: V₁ is equal to V₂
A circuit is set up as shown in the diagram.

Assuming that the ammeter has negligible resistance, what is the value of the resistor R?
1. 0.5 ohm
2. 1.5 ohms
3. 5 ohms
4. 6 ohm
Which of the following resistor combinations has the lowest resistance?
1. A
2. B
3. C
4. D
Name the circuits that can be used to find the resistance of a lamp.
1. A
2. B
3. C
4. D
Below are diagrams of two circuits.

If the same cell is used for each of the circuits shown, and the current is also the same in each case, what is the resistance R?
1. 6 ohms
2. 5 ohms
3. 7 ohms
4. 9 ohms
A resistor of value 1.5 ohm is needed for a circuit. But the ones avaliable are of value 1 ohm, 2 ohms and 3 ohms.

From the four circuits shown below, which one of the following arrangements could be used to obtain the required results?
1. A
2. B
3. C
4. D
The diagram below is a circuit.
If the p.d between P and Q is 4 V, what is the current flowing through the resistors?
1. 2 A
2. 4 A
3. 0.67 A
4. 1.5 A
Below is a diagram of a circuit.

The p.d between P and Q is 20 V.
What is the p.d. between X and Y?
1. 20 V
2. 40 V
3. 10 V
4. 120 V
The diagram below shows a circuit.

What is the effective resistance between terminals P and Q?
1. 20 ohms
2. 40 ohms
3. 10 ohms
4. 50 ohms
The diagram below shows four lamps being lighted up by a single cell.
One of the lamps, if removed, will cause all light to go out.

Which one of A - D is it?
1. A
2. B
3. C
4. D
The diagram below shows a symbol.
What does it represents?
1. A light dependent resistor
2. A magnetic relay
3. A fixed resistor
4. A variable resistor

Series and Parallel Circuits 2

Multiple Choice Questions