what resistance should be connected in parallel with galvanometer (in 10/ohm)?
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In the circuit shown, an ideal cell of emf E is connected in series to a non-ideal ammeter and voltmeter. Reading of the voltmeter is V0. When a resistance is added in parallel to the voltmeter its reading becomes V0/10 and the reading of the ammeter becomes 10 times the earlier value. find V0
15
Nov
In the circuit shown, an ideal cell of emf E is connected in series to a non-ideal ammeter and voltmeter. Reading of the voltmeter is V0. When a resistance is added in parallel to the voltmeter its reading becomes V0/10 and the reading of the ammeter becomes 10 times the earlier value. find V0 In [...]
For the arrangement of the potentimeter shown in the figure, The balance point is obtained at a distance 75cm from A when the key k is open The second balance point is obtained at 60 cm from A when the key k is closed. Find the internal resistance of the battery E1.
15
Nov
For the arrangement of the potentimeter shown in the figure, The balance point is obtained at a distance 75cm from A when the key k is open The second balance point is obtained at 60 cm from A when the key k is closed. Find the internal resistance of the battery E1. For the arrangement [...]
One of the circuits for the measurement of resistance by potentiometer is shown. The galvanometer is connected at point A and zero deflection is observed is observed at length PJ = 30 cm. In second case the secondary cell is changed.
15
Nov
One of the circuits for the measurement of resistance by potentiometer is shown. The galvanometer is connected at point A and zero deflection is observed is observed at length PJ = 30 cm. In second case the secondary cell is changed. The maximum current in a galvanometer can be 10 mA. Its resistance is 10 [...]
If resistance R1 in resistance box is 300 Ω then the balanced length is found to be 75.0 cm from end A. The diameter of unknown wire is 1 mm and length of the unknown wire is 31.4 cm. Find the specific resistance of the unknown wire
15
Nov
If resistance R1 in resistance box is 300 Ω then the balanced length is found to be 75.0 cm from end A. The diameter of unknown wire is 1 mm and length of the unknown wire is 31.4 cm. Find the specific resistance of the unknown wire The maximum current in a galvanometer can be [...]
The current in a conductor and the potential difference across its ends are measured by an ammeter and a voltmeter.The meters draw negligible current.The ammeter is accurate but the vlotmeter has a zero error(that is ,it does not read zero when no potential difference is applied).Calculate the zero error if the readings for two different conditions are 1.75 A, 14.4 V and 2.75 a, 22.4 V.
15
Nov
The current in a conductor and the potential difference across its ends are measured by an ammeter and a voltmeter.The meters draw negligible current.The ammeter is accurate but the vlotmeter has a zero error(that is ,it does not read zero when no potential difference is applied).Calculate the zero error if the readings for two different [...]
The maximum current in a galvanometer can be 10 mA. Its resistance is 10 Ω. To convert it into an ammeter of 1 A, what resistance should be connected in parallel with galvanometer (in 10/ohm)?
15
Nov
The maximum current in a galvanometer can be 10 mA. Its resistance is 10 Ω. To convert it into an ammeter of 1 A, what resistance should be connected in parallel with galvanometer (in 10/ohm)? The maximum current in a galvanometer can be 10 mA. Its resistance is 10 Ω. To convert it into an [...]