Current Electricity (NEET Physics): Questions 26 - 28 of 75

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2098 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 26

» Current Electricity » Color Code for Resistors

MCQ▾

Question

In the figure a carbon resistor has bands of different colors on its body as mentioned in the figure. The value of the resistance is

Carbon Resistor with four band

Carbon Resistor With Four Band

Carbon resistor has bands of different colors on its body

Choices

Choice (4) Response

a.

3.3 k Ω

b.

2.2 k Ω

c.

5.6 k Ω

d.

9.1 k Ω

Question number: 27

» Current Electricity » Electric Cell and Its Internal Resistance

MCQ▾

Question

A micro-ammeter has a resistance of 100Ω and a full scale range of 50 μA. It can be used as a voltmeter or a higher range ammeter provided a resistance is added to it Pick the correct range and resistance combination

(1) 10V range with 200 k Ω resistance in series.

(2) 50V range with 10 k Ω resistance in series.

(3) 5 mA range with 1 Ω resistance in parallel.

(4) 10 mA range with 1 k Ω resistance in parallel.

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1, 2 and 3

b.

1 and 2

c.

2 and 4

d.

1 and 3

Question number: 28

» Current Electricity » Potentiometer

Assertion-Reason▾

Assertion (Ꭺ)

The emf of the driver cell in the potentiometer experiment should be greater than the emf of the cell to be determined.

Reason (Ꭱ)

The fall of potential across the potentiometer wire should not be less than the emf of the cell to be determined.

Choices

Choice (4) Response

a.

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

b.

Both Ꭺ and Ꭱ are false

c.

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

d.

Ꭺ is false but Ꭱ is true

Sign In