Physics-Magnetism & Electricity at Work (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 7 - 10 of 10

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Question number: 7

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

In the electric circuit shown below.

An electric circuit with six bulbs

An Electric Circuit With Six Bulbs

Find the number of bulbs which will glow

Choices

Choice (4) Response

a.

Only bulb 3 will glow

b.

All the bulbs will glow

c.

Bulbs 4, 5 and 6 will glow

d.

None of the above

Question number: 8

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

Which one of the following statements is wrong?

Choices

Choice (4) Response

a.

Ammeter is placed in parallel

b.

Voltmeter should have high resistance

c.

Ammeter should have low resistance

d.

Voltmeter is placed in parallel across the conductor in a circuit

Question number: 9

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

A wire 100 cm long and 2.0 mm diameter has a resistance of 0.7 Ω, the electrical resistivity of the material is

Choices

Choice (4) Response

a.

1.1×106Ω.m

b.

0.22×10 - 6Ω. m

c.

4.4×106Ω.m

d.

2.2×106Ω.m

Question number: 10

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

Two conducting wires of the same material and of equal lengths and equal diameters are first connected in series and then in parallel in a circuit across the same potential difference. The ratio of heat produced in series and parallel combination would be

Choices

Choice (4) Response

a.

1: 4

b.

1: 2

c.

4: 2

d.

2: 2

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