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Practicing Success
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A galvanometer coil has a resistance of 10 $\Omega$ and the meter shows full scale deflection for a current of 3.0 mA. To convert it into a voltmeter of range 15 V a resistor R |
Of 3333 $\Omega$ is connected in series with the galvanomter Of 4990 $\Omega$ is connected in parallel with the galvanomter Of 4990 $\Omega$ is connected in series with the galvanomter Of 5000 $\Omega$ is connected in parallel with the galvanomter |
Of 4990 $\Omega$ is connected in series with the galvanomter |
The reading of voltmeter to become 15V. A large Resistance of Rs should be connected in series. $\Rightarrow I(R+R_s) = V $ $ R_s = \frac{V}{I} - R = \frac{15}{3\times10^{-3}} - 10 = 4990\Omega$ |
