# Current Electricity (KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 1 - 4 of 9

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## Question number: 1

» Current Electricity » Electrical Energy and Power

Appeared in Year: 2011

MCQ▾

### Question

In the circuit shown below the resistances are given in ohms and the battery is assumed ideal with emf equal to 3.0 volts. The resistor that dissipates the most power is

### Choices

Choice (4) Response

a.

R1

b.

R2

c.

R4

d.

R3

## Question number: 2

» Current Electricity » Series and Parallel Combinations of Resistors

Appeared in Year: 2011

MCQ▾

### Question

Two batteries V1 and V2 are connected to three resistors as shown below.

If and the current. If and, the current Now, if and, the current will be –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 3

» Current Electricity » Electrical Resistance

Appeared in Year: 2011

MCQ▾

### Question

The Quantum Hall Resistance RH is a fundamental constant with dimensions of resistance. If h is Planck’s constant and e the electron charge, then the dimension of RH is the same as -

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 4

» Current Electricity » Temperature Dependence of Resistance

Appeared in Year: 2012

MCQ▾

### Question

A steady current Ι flows through a wire of radius r, length L and resistivity ρ. The current produces heat in the wire. The rate of heat loss in a wire is proportional its surface area. The steady temperature of the wire is independent of

### Choices

Choice (4) Response

a.

L

b.

r

c.

I

d.

p

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