Current Electricity-Series and Parallel Combinations of Resistors (NEET Physics): Questions 1 - 3 of 10

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Question number: 1

» Current Electricity » Series and Parallel Combinations of Resistors

MCQ▾

Question

An electric kettle has two heating coils. When one of the coils is switched on, the water begins to boil in 6 minutes. When the other is switched on, the boiling begins in 8 minutes. The time when the boiling begins if both coils are switched on simultaneously is (i) in series (ii) in parallel. (Specific heat of the water is 4.2 joules/gram 0 C)

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

  1. 14 min in series
  2. 3.43 min in parallel
  3. 3.43 min in series
  4. 14 min in parallel

Choices

Choice (4) Response
a.

2 and 4

b.

1 and 3

c.

1, 2 and 3

d.

1 and 2

Question number: 2

» Current Electricity » Series and Parallel Combinations of Resistors

MCQ▾

Question

Which of the following statements are correct?

  1. Voltmeter should have high resistance.
  2. Ammeter should have low resistance.
  3. Voltmeter is placed in parallel across the conductor in a circuit.
  4. Ammeter is placed in parallel across the conductor in a circuit.

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

Choices

Choice (4) Response
a.

1 and 2

b.

2 and 4

c.

1, 2 and 3

d.

1 and 3

Passage

A battery is connected to a potentiometer obtained at 84 cm along the wire. When a resistance of 5Ω is connected as a shunt with the cell, the balance point is obtained at 70 cm.

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

» Current Electricity » Series and Parallel Combinations of Resistors

MCQ▾

Question

How can we change a galvanometer with R g = 20.0 Ω and I g = 0.00100 A into a voltmeter with a maximum range of 10.0 V?

Choices

Choice (4) Response
a.

By adding a resistance 8890 Ω in series with the galvanometer

b.

By adding a resistance 8890 Ω in parallel with the galvanometer

c.

By adding a resistance 9980 Ω . in parallel with the galvanometer

d.

By adding a resistance 9980 Ω in series with the galvanometer

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