# Current Electricity-Electrical Energy and Power (KVPY Stream-SA (Class 11) Physics): Questions 1 - 4 of 9

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## Question number: 1

» Current Electricity » Electrical Energy and Power

Appeared in Year: 2010

MCQ▾

### Question

An electric heater consists of a micro coil and runs under 220 V, consuming 1 kW power. Part of its coil burned out and it was reconnected after cutting off the burn portion. The power it will consume now is:

### Choices

Choice (4) Response

a.

1 kW

b.

more than 1 kW

c.

less than 1 kW, but not zero

d.

0 kW

## Question number: 2

» Current Electricity » Electrical Energy and Power

Appeared in Year: 2011

MCQ▾

### Question

In the following circuit, the 1 Ω resistor dissipates power P. If the resistor is replaced by 9 Ω, the power dissipated in it is

### Choices

Choice (4) Response

a.

3P

b.

9P

c.

d.

P

## Question number: 3

» Current Electricity » Electrical Energy and Power

MCQ▾

### Question

If the current through a resistor in a circuit increases by 4.5%, the power dissipated by the resistor,

### Choices

Choice (4) Response

a.

Increases approximately by 4.5%

b.

Increases approximately by 9%

c.

Increases approximately by 0.66%

d.

Decreases approximately by 9%

## Question number: 4

» Current Electricity » Electrical Energy and Power

MCQ▾

### Question

Following figures show different combinations of identical resistor (s) of resistance R connected to identical battery (ies) of voltage V. Which option is correct regarding the total power dissipated in the circuit?

### Choices

Choice (4) Response

a.

b.

c.

d.

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