Test: Combination Of Cells


10 Questions MCQ Test Physics Class 12 | Test: Combination Of Cells


Description
This mock test of Test: Combination Of Cells for Class 12 helps you for every Class 12 entrance exam. This contains 10 Multiple Choice Questions for Class 12 Test: Combination Of Cells (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Combination Of Cells quiz give you a good mix of easy questions and tough questions. Class 12 students definitely take this Test: Combination Of Cells exercise for a better result in the exam. You can find other Test: Combination Of Cells extra questions, long questions & short questions for Class 12 on EduRev as well by searching above.
QUESTION: 1

If cells are joined in parallel, they have _______.

Solution:
QUESTION: 2

If the internal resistance of a cell is 20 ohm and resistance of the circuit is also 20 ohm. Will the current remain same whether the given n identical cells are in series or in parallel?

Solution:

Correct Answer :- a

Explanation:- Since the internal resistance and resistance of the current is same. Therefore for same current R = r

For a series combination of n cells

the Current is given by:

I = n E /(R +n r)

For a parallel combination of n cells

I = n E /(nR + r)

QUESTION: 3

Three identical cells, each of 4 V and internal resistance r, are connected in series to a 6 ohm resistor. If the current flowing in the circuit is 2 A. The internal resistance of each cell is​

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QUESTION: 4

When number of identical cells, in parallel combination are increased, the voltage of the circuit will

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QUESTION: 5

When numbers of cells in series combination are increased, the current of the circuit will

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QUESTION: 6

If there are n cells of emf E1, E2, …En and of internal resistances r1, r2 …rn , connected in parallel, the combination is equivalent to a cell of emf Eeq such that

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QUESTION: 7

The equivalent emf of two cells (with ε1 > ε2) in series if we connect two negative electrodes of adjacent cells is

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QUESTION: 8

The internal resistance of two identical cells, with same current whether joined in series or parallel to a 1Ω resistor is​

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QUESTION: 9

If cells are joined in series, they have ________.

Solution:
QUESTION: 10

Three identical cells, each of 2V and internal resistance of 0.2 ohm are connected in series to an external resistance of 7.4 ohm. The current in the circuit will be​

Solution:

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