A cell of terminal voltage 1.5V is connected to a resistor of 5 ohms, with an ammeter whose resistance 2.5W in series. What is the reading of the ammeter? Calculate the potential difference across 5 W resistor?

10V, 2A

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1V, 0.2A

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5A, 25V

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5A, 1kV

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Solution

The correct option is B
1V, 0.2A

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Similar questions

A cell of e.m.f. 1.8 V and internal resistance $2 Ω$ is connected in series with an ammeter of resistance $0.7 Ω$ and a resistor of $4.5 Ω$ as shown in the figure.
(a) What would be the reading of the ammeter?
(b) What is the potential difference across the terminals of the cell?

Q. A cell of EMF 1.8 V and internal resistance

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is connected in a series with an ammeter of resistance

0.7 Ω

and a resistor of

4.5 Ω

as shown below.

(a) What would be the reading of the ammeter?
(b) What is the potential difference across the terminals of the cell?
[4 MARKS]

A cell of e.m.f. 2 V and internal resistance $1.2 Ω$ is connected to an ammeter of resistance $0.8 Ω$ and two resistors of $4.5 Ω$ and $9 Ω$ as shown in the figure.
Find:
(a) the reading of the ammeter,
(b) the potential difference across the terminals of the cell, and
(c) the potential difference across the $4.5 Ω$ resistor.