Current Electricity-Temperature Dependence of Resistance (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 1 - 2 of 2

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Question number: 1

» Current Electricity » Temperature Dependence of Resistance

Assertion-Reason▾

Assertion (Ꭺ)

The temperature coefficient of resistance is positive for metals and negative for p-type semiconductor.

Reason (Ꭱ)

The effective charge carriers in metals are negatively charged whereas in p-type semiconductor they are positively charged.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question number: 2

» Current Electricity » Temperature Dependence of Resistance

Appeared in Year: 2017

MCQ▾

Question

Two rods Equation and Equation of different materials are welded together as shown in figure. Their thermal conductivities are Equation and Equation . 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.

Equation

b.

Equation

c.

Equation

d.

Equation

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