Current Electricity (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 75 - 77 of 77

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Question number: 75

» Current Electricity » Ohm's Law

Appeared in Year: 2016

MCQ▾

Question

A filament bulb is to be used in a main supply. When a resistance is connected in series, it works perfectly and the bulb consumes . The value of is –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 76

» Current Electricity » Temperature Dependence of Resistance

Appeared in Year: 2017

MCQ▾

Question

Two rods and of different materials are welded together as shown in figure. Their thermal conductivities are and . The thermal conductivity of the composite rod will be

Two rods A and B are connected

Two Rods a and B Are Connected

In figure two rods A and B are welded together as shown in figure.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 77

» Current Electricity » Resistances of Different Materials

Appeared in Year: 2017

MCQ▾

Question

The resistance of a wire is ohm. If it is melted and stretched to times its original length, its new resistance will be –

Choices

Choice (4) Response

a.

b.

c.

d.

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