IGCSE Physics Paper-1: Specimen Questions with Answers 53 - 54 of 149

Question number: 53

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Question

In which of the circuits below both lamps are protected by the fuse?

Choices

Choice (4)Response

a.

Circuit diagram consists of two bulbs and a fuse

Circuit Diagram Consists of Two Bulbs and a Fuse

b.

Circuit diagram consists of two bulbs and fuse

Circuit Diagram Consists of Two Bulbs and Fuse

c.

Circuit consists of two bulbs and a fuse

Circuit Consists of Two Bulbs and a Fuse

Circuit consists of two bulbs and a fuse

Circuit Consists of Two Bulbs and a Fuse

d.

Circuit diagram consists of two bulbs and a fuse in different.

Circuit Diagram Consists of Two Bulbs and a Fuse in Different.

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 number: 54

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Question

Cotton is measured between two points on a scale. This cotton is rolled around a pen 6 times. Find the length of each roll?

A piece of cotton is measured by a ruler

A Piece of Cotton is Measured by a Ruler

Cotton is wounded around a pen

Cotton is Wounded Around a Pen

Choices

Choice (4)Response

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,

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