Internal Resistance, Potential Difference and EMF of a Cell, a Combination of Cells in Series and Parallel NEET Questions

Physics - Current Electricity

Internal Resistance, Potential Difference and EMF of a Cell, a Combination of Cells in Series and Parallel MCQ Questions


13.
The potential difference across the terminals of a cell is equal to its EMF when:
A.
When no current flows
B.
When current flows
C.
When internal resistance is very high
D.
When load resistance is infinite
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ANSWER :
A. When no current flows
14.
A battery consists of multiple cells connected together to:
A.
Increase voltage
B.
Increase current
C.
Increase resistance
D.
Increase charge storage
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ANSWER :
A. Increase voltage
15.
Which of the following is correct for a cell discharging through a resistor?
A.
V = E - Ir
B.
V = E + Ir
C.
V = IR
D.
V = E - IR
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ANSWER :
A. V = E - Ir
16.
When a cell is supplying current, its terminal voltage is:
A.
Equal to its EMF
B.
Less than its EMF
C.
Greater than its EMF
D.
Cannot be determined
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ANSWER :
B. Less than its EMF
17.
Two cells of emf 1.5V and 2V are connected in series. The total emf of the combination is:

NEET - 2022

A.
3.5V
B.
0.5V
C.
1.75V
D.
3V
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ANSWER :
A. 3.5V
18.
A 12V battery has an internal resistance of 1Ω. When connected to an external resistance of 5Ω, the terminal voltage of the battery is:

NEET - 2023

A.
10V
B.
12V
C.
14V
D.
6V
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ANSWER :
A. 10V