then where will the new position of the null point be from the same end

In a meter bridge experiment, the null point is obtained at 20 cm from one end of the wire when resistance X is balanced against another resistance Y. If X< Y, then where will the new position of the null point be from the same end, if one decides to balance a resistance of 4X [...]

When an ammter of negligible internal resistance is inserted in series with circuit it reads 1A When the voltmeter of very large resistance is connected across X it reads 1V. When the point A and B are shorted by a conducting wire, the voltmeter meausres 10V across the battery. The internal resistance of the battery [...]

A voltmeter having resistance of `1800 Omega` is employed to measure the potential difference across `200 Omega` resistance which is connected to DC power supply of 50 V and internal resistance `20 Omega`. What is the percentage change in potential difference across `200 Omega` resistance as a result of connecting voltmeter across it ? if [...]

Figure shows a circuit that may be used to compare the resistance R of an unknown resistor with a 100 Ω standard. The distance l from one end of the potentiometer slider wire to the balance point are 400 mm and 588 mm when X is connected to Y and Z, respectively. The length of [...]

In a meter bridge experiment, the null point is obtained at 20 cm from one end of the wire when resistance X is balanced against another resistance Y. If X< Y, then where will the new position of the null point be from the same end, if one decides to balance a resistance of 4X [...]