Question
Which labelled component in the circuit shown controls the brightness of lamp X?
Answer/Explanation
Ans:
B
The diagram shows a battery connected to two resistors. Three ammeters M1, M2 and M3 are connected in the circuit.
Ammeter M1 reads 1.0 A.
What are the readings on M2 and on M3?
| reading on M2 / A | reading on M3 / A |
A | 0.0 | 0.0 |
B | 0.5 | 0.5 |
C | 0.5 | 1.0 |
D | 1.0 | 1.0 |
Answer/Explanation
Ans: D
Question
A student sets up a circuit containing a battery of two cells and three lamps, as shown.
What is the circuit diagram for this arrangement?
Answer/Explanation
Ans: A
Question
In which circuit does the lamp light?
A B C D
Answer/Explanation
Ans: C
Question
The diagram shows a circuit containing a d.c. power supply, a motor and a variable resistor.
Three ammeters X, Y and Z show the current in different parts of the circuit.
The reading on X is 4.0 A.
Which statement is correct?
A The readings on Y and Z are both less than 4.0 A.
B The readings on Y and Z are both equal to 4.0 A.
C The readings on Y and Z are both greater than 4.0 A.
D The reading on Z is zero.
Answer/Explanation
Ans: B