IGCSE Physics Paper-1: Specimen Questions with Answers 53 - 54 of 149
Question 53
Question
MCQ▾In which of the circuits below both lamps are protected by the fuse?
Choices
Choice (4) | |
---|---|
a. | |
b. | |
c. | |
d. |
Answer
d.Explanation
Fuse is a simple electrical part, which consist of wire and terminal at each end. It protects the circuit in the event of a large current. When large current pass fuse make circuit open. Thus fuse should be connected in series. For choice 4 only fuse protect both the lamps because in it fuse connected in series with both the lamps.
Question 54
Question
MCQ▾Cotton is measured between two points on a scale. This cotton is rolled around a pen 6 times. Find the length of each roll?
Choices
Choice (4) | |
---|---|
a. | 13.2cm |
b. | 15.6 cm |
c. | 2.6cm |
d. | 2.2cm |
Answer
d.Explanation
From first given figure the length of the cotton is measured as,
Now, length of the cotton is wound closely around a pen, and it goes six rounds. So, distance of one round is given as,