Current Electricity (NEET Physics): Questions 34 - 39 of 75

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Passage

In the circuit shown in the figure,

 5Ω resistor and 1Ω internal resistance of battery of 12 V

5Ω Resistor and 1Ω Internal Resistance of Battery of 12 V

In figure 5Ω resistor are connected in series with battery of 12 V having internal resistance 1Ω.

Question number: 34 (1 of 3 Based on Passage) Show Passage

» Current Electricity » Series and Parallel Combinations of Resistors

MCQ▾

Question

Rate of conversion of chemical energy within the battery is

Choices

Choice (4) Response

a.

4W

b.

20W

c.

14W

d.

24W

Question number: 35 (2 of 3 Based on Passage) Show Passage

» Current Electricity » Series and Parallel Combinations of Resistors

MCQ▾

Question

Rate of dissipation of electrical energy in external resistor is

Choices

Choice (4) Response

a.

24 W

b.

20 W

c.

14 W

d.

4W

Question number: 36 (3 of 3 Based on Passage) Show Passage

» Current Electricity » Series and Parallel Combinations of Resistors

MCQ▾

Question

Rate of dissipation of electrical energy in battery is

Choices

Choice (4) Response

a.

24 W

b.

20W

c.

4 W

d.

14 W

Question number: 37

» Current Electricity » Potentiometer

MCQ▾

Question

In the shown arrangement of the experiment of the meter bridge if AC corresponding to null deflection of galvanometer is x, what would be value of x if the radius of cross-sectional area the wire AB is doubled

Circuit diagram of potentiometer experiment

Circuit Diagram of Potentiometer Experiment

Here figure shows the arrangement of potentiometer experiment. AC is the balancing length of potentiometer wire AB.

Choices

Choice (4) Response

a.

x

b.

Ax

c.

2x

d.

x4

Question number: 38

» Current Electricity » Electrical Resistivity

Assertion-Reason▾

Assertion (Ꭺ)

The resistivity of a semiconductor decreases with temperature.

Reason (Ꭱ)

The atoms of a semiconductor vibrate with larger amplitude at higher temperatures thereby increasing its resistivity.

Choices

Choice (4) Response

a.

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

b.

Ꭺ is true but Ꭱ is false

c.

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

d.

Both Ꭺ and Ꭱ are false

Question number: 39

» Current Electricity » Resistances of Different Materials

MCQ▾

Question

The shunt required for 10 % of main current to be sent through the moving coil galvanometer of resistance 99 Ω will be

Choices

Choice (4) Response

a.

90 Ω

b.

0.9 Ω

c.

9.9 Ω

d.

11 Ω

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