Question

Five cells each of EMF 5 V are connected in series. The combination in series is joined to an ammeter of negligible resistance, a 1.6 Ω resistor, a 0.8 Ω resistor and an unknown resistor R 1 as shown in figure. The current in the circuit is 10 A. Assume the voltmeter to be ideal. 5. Find the value of R 1_________ . (a) 2Ω (b) 0.1Ω (c)0.5Ω (d)5Ω

Answer 1

Answer:

0.1 ohm

Explanation:

since diagram is not provided so I tried to solve according to my way. hope this helps.

Answer 2

Answer:

The value of R (b) 0.1Ω

Explanation:

Step 1: Since diagram is not provided so I tried to solve according to my way. hope this helps.

A voltage metre, also referred to as a voltage metre, is a device that gauges the voltage or potential differential existing between two points in an electrical or electronic circuit. Direct Current (DC) or Alternating Current (AC) circuits are typically the two types of circuits that the voltmeter is used for.

Step 2: The electrical potential difference between two locations in an electric circuit is measured using a voltmeter. An ammeter is a tool used to gauge the electric current flowing through a wire.

A circuit in electronics is a full circular path through which electricity travels. A current generator, conductors, and a load make up a straightforward circuit. In a broad sense, the word "circuit" can apply to any fixed path through which electricity, data, or a signal can pass.

$I=10 \mathrm{~A}$

$10=^2=\frac{5 \times 5}{R_1+2.4}$

$\begin{aligned}& I=\frac{\varepsilon_{\text {net }}}{R_1+1.6+0.8} \\\Rightarrow & I=\frac{5 \varepsilon}{R_1+2.4} \\\Rightarrow & 2 R_1+4.8=5 \\\Rightarrow & 2 R_1=0.2 \\\Rightarrow & R_1=0.1 \Omega\end{aligned}$

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