List of top Physics Questions on Electrical Instruments asked in MHT CET

To determine the internal resistance of a cell with potentiometer, when the cell is shunted by a resistance of $5\Omega$ the balancing length is $250 \text{ cm}$. When the cell is shunted by $20\Omega$, the balancing length of potentiometer wire is $400 \text{ cm}$. The internal resistance, of the cell is

A null point is obtained at $200\text{ cm}$ on potentiometer wire when cell in secondary circuit is shunted by $5\Omega$. When a resistance of $15\Omega$ is used for shunting, null point moves to $300\text{ cm}$ . The internal resistance of the cell is

The voltmeter has range $10\text{ V}$ and its internal resistance is $50\Omega$. To increase the range of voltmeter to $15\text{ V}$ , the resistance which is to be connected is

To determine the internal resistance of a cell with potentiometer, when the cell is shunted by a resistance of $5\Omega$ the balancing length is $250 \text{ cm}$. When the cell is shunted by $20\Omega$, the balancing length of potentiometer wire is $400 \text{ cm}$. The internal resistance, of the cell is

A galvanometer has resistance \( G = 100 \, \Omega \) and shows full-scale deflection at \( I_q = 1 \, \text{mA} \). To convert it into a voltmeter of range 5 V, what resistance should be connected in series?

A galvanometer of resistance ' \(G\) ' can be converted into a voltmeter of range \( (0 - V) \) volt by connecting a resistance ' \(R\) ' in series with it. The resistance ' \(R\) ' required to change its range from \( \left(0 - \frac{V}{4}\right) \) volt will be

A galvanometer of resistance ' \(G\) ' can be converted into a voltmeter of range \( (0 - V) \) volt by connecting a resistance ' \(R\) ' in series with it. The resistance ' \(R\) ' required to change its range from \( \left(0 - \frac{V}{4}\right) \) volt will be