Cengage JEE Mains Physics by B.M Sharma
Resistance of a resistor at temperature t^∘C is Rt = R0 (1+αt+βt^2 ), where R0 is the resistance at 0^∘C. The temperature coefficient of resistance at temperature t^∘C is
06
Dec
Resistance of a resistor at temperature t^∘C is Rt = R0 (1+αt+βt^2 ), where R0 is the resistance at 0^∘C. The temperature coefficient of resistance at temperature t^∘C is Resistance of a resistor at temperature t^∘C is Rt = R0 (1+αt+βt^2 ) where R0 is the resistance at 0^∘C. The temperature coefficient of resistance at [...]
In the circuit shown here, E1 = E2 = E3 = 2V and R1 = R2 = 4 ohms. The current flowing between points A and B through battery E2 is :-
06
Dec
In the circuit shown here, E1 = E2 = E3 = 2V and R1 = R2 = 4 ohms. The current flowing between points A and B through battery E2 is :- E1 = E2 = E3 = 2V and R1 = R2 = 4 ohms. The current flowing between points A and B through [...]
The equivalent resistance between A and B in the network in fig.,
06
Dec
The equivalent resistance between A and B in the network in fig., The equivalent resistance between A and B in the network in fig. December 6, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 19 - Electric Resistance and Simple Circuits ,
The plot represents the flow of current through a wire at three different times. The ratio of charges flowing through the wire at different times is (second figure)
06
Dec
The plot represents the flow of current through a wire at three different times. The ratio of charges flowing through the wire at different times is (second figure) The plot represents the flow of current through a wire at three different times. The ratio of charges flowing through the wire at different times is (second [...]
A cell of emf E volt with no internal resistance is connected to a wire whose cross section changes. The wire has three sections of equal length. The middle section has a radius a, whereas the radius of the outer two sections is 2a. The ratio of the potential difference across section AB to the potential difference across section CA is
06
Dec
A cell of emf E volt with no internal resistance is connected to a wire whose cross section changes. The wire has three sections of equal length. The middle section has a radius a, whereas the radius of the outer two sections is 2a. The ratio of the potential difference across section AB to the [...]
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A cell of emf E volt with no internal resistance is connected to a wire whose cross section changes. The wire has three sections of equal length. The middle section has a radius a ,
whereas the radius of the outer two sections is 2a. The ratio of the potential difference across section AB to the potential difference across section CA is ,
In the circuit shown in Figure, the magnitudes and the direction of the flow of current, respectively, would be :
06
Dec
In the circuit shown in Figure, the magnitudes and the direction of the flow of current, respectively, would be : In the circuit shown in Figure respectively the magnitudes and the direction of the flow of current would be December 6, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 19 - Electric [...]
Figure shows two square, X and Y cut from a sheet of metal of uniform thickness t. X and Y have sides of length L and 2L, respectively. The resistances Rx and Ry of the squares are measured between the opposite faces shaded in fig. What is the value of Rx/Ry?
06
Dec
Figure shows two square, X and Y cut from a sheet of metal of uniform thickness t. X and Y have sides of length L and 2L, respectively. The resistances Rx and Ry of the squares are measured between the opposite faces shaded in fig. What is the value of Rx/Ry? Figure shows two square [...]
In the circuit shown in Fig, the current I has a value equal to
06
Dec
In the circuit shown in Fig, the current I has a value equal to In the circuit shown in fig the current I has a value equal to December 6, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 19 - Electric Resistance and Simple Circuits ,
Figure represents a load consisting of three identical resistances connected to an electric energy source of emf 12 V and internal resistance 0.6Ω. The ammeter reads 2A. The magnitude of each resistance is.
06
Dec
Figure represents a load consisting of three identical resistances connected to an electric energy source of emf 12 V and internal resistance 0.6Ω. The ammeter reads 2A. The magnitude of each resistance is. The circuit shown has resistors of equal resistance R. Find the equivalent resistance between A and B when the key is closed. [...]
In the circuit shown, current through 25V cell is
06
Dec
In the circuit shown, current through 25V cell is current through 25V cell is In the circuit shown December 6, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 19 - Electric Resistance and Simple Circuits ,