(c) In the figure below \( \mathrm{R}=10 \Omega \) and \( \varepsilon=13 \mathrm{~V} \) find the reading of ammeter and voltm (4)
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- \( R = 10 \, \Omega \) - \( \varepsilon = 13 \, \text{V} \) - Additional voltage sources: 8.0 V and 6.0 V - Resistor: 3.0 \(\Omega\) Show more…
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In Fig. $29-9, R=10.0 \Omega$ and $\mathscr{E}=13 \mathrm{~V}$. Find the readings of the ideal ammeter and voltmeter.
In Fig. $27-62,$ a voltmeter of resistance $R_{\mathrm{v}}=300 \Omega$ and an ammeter of resistance $R_{A}=3.00 \Omega$ are being used to measure a resistance $R$ in a circuit that also contains a resistance $R_{0}=100 \Omega$ and an ideal battery of emf $\mathscr{E}=12.0 \mathrm{~V} .$ Resistance $R$ is given by $R=V / i,$ where $V$ is the voltmeter reading and $i$ is the current in resistance $R$. However, the ammeter reading is not $i$ but rather $i^{\prime},$ which is $i$ plus the current through the voltmeter. Thus, the ratio of the two meter readings is not $R$ but only an apparent resistance $R^{\prime}=V l i^{\prime} .$ If $R=85.0 \Omega,$ what are (a) the ammeter reading, (b) the voltmeter reading, and (c) $R^{\prime \prime}$ (d) If $R_{\mathrm{v}}$ is increased, does the difference between $R^{\prime}$ and $R$ increase, decrease, or remain the same?
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