Current Electricity-Potentiometer [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 15 - 19 of 27

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Question 15

Question MCQ▾

The arrangement as shown in figure is called as

Circuit Diagram Consist of Potentiometer, Battery and a Key

Choices

Choice (4)Response

a.

Potential adder

b.

Potential subtracted

c.

Potential multiplier

d.

Potential divider

Edit

Question 16

Question MCQ▾

In a potentiometer experiment the balancing with a cell is at length 240 cm. On shunting the cell with a resistance of 2 Ω, the balancing length becomes 120 cm. The internal resistance of the cell is

Choices

Choice (4)Response

a.

2 Ω

b.

4 Ω

c.

1 Ω

d.

0.5 Ω

Edit

Question 17

Question MCQ▾

A Potentiometer wire of length 1 m is connected in series with 490 Ω resistance and 2V battery. If 0.2mV/cm is the potential gradient, then resistance of the potentiometer wire is

Choices

Choice (4)Response

a.

5.9 Ω

b.

7.9 Ω

c.

6.9 Ω

d.

4.9 Ω

Edit

Question 18

Appeared in Year: 2021

Question MCQ▾

In a potentiometer circuit a cell of EMF 1.5 V gives balance point at 36 cm length of wire. If another cell of EMF 2.5 V replaces the first cell, then at what length of the wire, the balance point occurs?

Choices

Choice (4)Response

a.

21.6 cm

b.

60 cm

c.

62 cm

d.

64 cm

Edit

Question 19

Question MCQ▾

The resistivity of a potentiometer wire is and its area of cross-section is . If current is flowing through the wire, the potential gradient will be.

Choices

Choice (4)Response

a.

b.

c.

d.

Edit