Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
A resistance R is to be measured using a meter bridge. Student chooses the standared resistance S to be 100Ω. He finds the null point at l1=2.9cm. He is told to attempt to improve the accuracy. Which of the folllowing is a useful way?
20
Sep
A resistance R is to be measured using a meter bridge. Student chooses the standared resistance S to be 100Ω. He finds the null point at l1=2.9cm. He is told to attempt to improve the accuracy. Which of the folllowing is a useful way? Two cells of emfs approximately 5 V and 10 V are [...]
In a practical wheat stone bridge circuit as shown, when one more resistance of 100Ω is connected in parallel with unknown resistance ‘x’, then ratio l1/l2 become ‘2’l1 is balance length , AB is a uniform wire. Then value of ‘x’ must be :
20
Sep
In a practical wheat stone bridge circuit as shown, when one more resistance of 100Ω is connected in parallel with unknown resistance ‘x’, then ratio l1/l2 become ‘2’l1 is balance length , AB is a uniform wire. Then value of ‘x’ must be : AB is a uniform wire. Then value of 'x' must be [...]
Two resistances are connected in two gaps of a metre bridge. The balance point is 20 cm from the zero end. A resistance of 15 Ω is connected in series with the smaller of the two. The null point shifts to 40 cm. Then value of the smaller resistance Is:
20
Sep
Two resistances are connected in two gaps of a metre bridge. The balance point is 20 cm from the zero end. A resistance of 15 Ω is connected in series with the smaller of the two. The null point shifts to 40 cm. Then value of the smaller resistance Is: Two cells of emfs approximately [...]
In the circuit shown, a meter bridge is in its balanced state. The meter bridge wire has a resistance .1ohm/cm. The value of unknown resistance X and the current drawn from the battery of negligible resistance is
20
Sep
In the circuit shown, a meter bridge is in its balanced state. The meter bridge wire has a resistance .1ohm/cm. The value of unknown resistance X and the current drawn from the battery of negligible resistance is a meter bridge is in its balanced state. The meter bridge wire has a resistance .1ohm/cm. The value [...]
In a meter bridge experiment null point is obtained at 20 cm. from one end of the wire when resistance X is balanced against another resistance Y. If XltY, then where will be the new position of the null point from the same end, if one deicdes to balance a resistance of 4 X against Y
20
Sep
In a meter bridge experiment null point is obtained at 20 cm. from one end of the wire when resistance X is balanced against another resistance Y. If XltY, then where will be the new position of the null point from the same end, if one deicdes to balance a resistance of 4 X against [...]
Two cells of emfs approximately 5 V and 10 V are to be accurately compared using a poteniometer of length 400 cm.
20
Sep
Two cells of emfs approximately 5 V and 10 V are to be accurately compared using a poteniometer of length 400 cm. Two cells of emfs approximately 5 V and 10 V are to be accurately compared using a poteniometer of length 400 cm. September 20, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
In wheatstone bridge P = 9 ohm , Q = 11 ohm, R = 4 ohm and S = 6 ohm. How much resistance must be put in parallel to the resistance S to balance the bridge ?
20
Sep
In wheatstone bridge P = 9 ohm , Q = 11 ohm, R = 4 ohm and S = 6 ohm. How much resistance must be put in parallel to the resistance S to balance the bridge ? In wheatstone bridge P = 9 ohm Q = 11 ohm R = 4 ohm and S [...]
Figure shows a simple a potentiometer circuit for measuring a small emf produced by a thermocouple. The meter wire PQ has a resistance of 5Ω, and the driver cell has an emf of 2.00V. If a balance point is obtained 0.600 m along PQ when measuring an emf of 6.00 mV, what is the value of resistance R?
20
Sep
Figure shows a simple a potentiometer circuit for measuring a small emf produced by a thermocouple. The meter wire PQ has a resistance of 5Ω, and the driver cell has an emf of 2.00V. If a balance point is obtained 0.600 m along PQ when measuring an emf of 6.00 mV, what is the value [...]
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and the driver cell has an emf of 2.00V. If a balance point is obtained 0.600 m along PQ when measuring an emf of 6.00 mV ,
Figure shows a simple a potentiometer circuit for measuring a small emf produced by a thermocouple. The meter wire PQ has a resistance of 5Ω ,
what is the value of resistance R? ,
In meter bridge or wheat stone bridge for mmeasurement of resistance, the known and the unknown resistances are interchanged. The error so removed is
20
Sep
In meter bridge or wheat stone bridge for mmeasurement of resistance, the known and the unknown resistances are interchanged. The error so removed is In meter bridge or wheat stone bridge for mmeasurement of resistance the known and the unknown resistances are interchanged. The error so removed is September 20, 2020 Category: Uncategorised (JEE Advanced [...]
What are the advantages of the null point method in a wheat stone bridge ? what additional measurement would be required to calculate R unknown by any other method ?
20
Sep
What are the advantages of the null point method in a wheat stone bridge ? what additional measurement would be required to calculate R unknown by any other method ? What are the advantages of the null point method in a wheat stone bridge ? what additional measurement would be required to calculate R unknown [...]