Current Electricity (KVPY Stream-SA (Class 11) Physics): Questions 11 - 13 of 25

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Question number: 11

» 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: 12

» Current Electricity » Series and Parallel Combinations of Resistors

Appeared in Year: 2012

MCQ▾

Question

In the circuit shown, n identical resistors R are connected in parallel (n > 1) and the combination in series to another resistor R0. In the adjoining circuit n resistors of resistance R are all connected in series along with R0.

Series and parallel connection of n identical resistors.

Series and Parallel Connection of N Identical Resistors.

In figure two circuits are shown of series and parallel combination of the n identical resistors R.

The batteries in both circuits are identical and net power dissipated in the n resistors in both circuit is same. The ratio Equation is

Choices

Choice (4) Response

a.

n

b.

n2

c.

Equation

d.

1

Question number: 13

» 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?

diagrams of identical resistor(s) and battery(ies) (Circuit M)

Diagrams of Identical Resistor (S) and Battery (Ies) (Circuit M)

In figure circuit of different combination of identical resistor (s) of resistance R and identical battery (ies) of voltage V is down.

Diagrams of identical resistor(s) and battery(ies) (Circuit N)

Diagrams of Identical Resistor (S) and Battery (Ies) (Circuit N)

In figure circuit of different combination of identical resistor (s) of resistance R and identical battery (ies) of voltage V is down.

Diagrams of identical resistor(s) and battery(ies) (Circuit O)

Diagrams of Identical Resistor (S) and Battery (Ies) (Circuit O)

In figure circuit of different combination of identical resistor (s) of resistance R and identical battery (ies) of voltage V is down.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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