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A battery of emf 15V and internal resistance of 4Ω is connected to a resistor. If the current in the circuit is 2A and the circuit is closed. Resistance of the resistor and terminal voltage of the battery will be
  • a)
    2.5Ω, 6V
  • b)
    3.5Ω, 6V
  • c)
    2.5Ω, 7V
  • d)
    3.5Ω, 7V
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
A battery of emf 15V and internal resistance of 4Ω is connected ...
Given, ε = 15V,
r = 4Ω,
I = 2A
Now, for resistance of the resistors
ε − Ir = V = IR;
15 − 2 × 4=2 × R;
15 − 8  = 2R
R = 7/2 = 3.5Ω.
Terminal voltage of battery,
V = IR = 2 × 3.5 = 7V
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Most Upvoted Answer
A battery of emf 15V and internal resistance of 4Ω is connected ...


Given data:
Emf of battery (E) = 15V
Internal resistance of battery (r) = 4Ω
Current in the circuit (I) = 2A

Calculating total resistance:
Total resistance in the circuit (R_total) = E/I
R_total = 15V/2A
R_total = 7.5Ω

Calculating resistance of the external resistor:
External resistance (R) = R_total - r
R = 7.5Ω - 4Ω
R = 3.5Ω

Calculating terminal voltage of the battery:
Terminal voltage (V) = E - (I*r)
V = 15V - (2A*4Ω)
V = 15V - 8V
V = 7V

Therefore, the resistance of the resistor is 3.5Ω and the terminal voltage of the battery is 7V. Hence, option 'D' is correct.
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A battery of emf 15V and internal resistance of 4Ω is connected to a resistor. If the current in the circuit is 2A and the circuit is closed. Resistance of the resistor and terminal voltage of the battery will bea)2.5Ω, 6Vb)3.5Ω, 6Vc)2.5Ω, 7Vd)3.5Ω, 7VCorrect answer is option 'D'. Can you explain this answer?
Question Description
A battery of emf 15V and internal resistance of 4Ω is connected to a resistor. If the current in the circuit is 2A and the circuit is closed. Resistance of the resistor and terminal voltage of the battery will bea)2.5Ω, 6Vb)3.5Ω, 6Vc)2.5Ω, 7Vd)3.5Ω, 7VCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A battery of emf 15V and internal resistance of 4Ω is connected to a resistor. If the current in the circuit is 2A and the circuit is closed. Resistance of the resistor and terminal voltage of the battery will bea)2.5Ω, 6Vb)3.5Ω, 6Vc)2.5Ω, 7Vd)3.5Ω, 7VCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A battery of emf 15V and internal resistance of 4Ω is connected to a resistor. If the current in the circuit is 2A and the circuit is closed. Resistance of the resistor and terminal voltage of the battery will bea)2.5Ω, 6Vb)3.5Ω, 6Vc)2.5Ω, 7Vd)3.5Ω, 7VCorrect answer is option 'D'. Can you explain this answer?.
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