Cengage JEE Mains Physics by B.M Sharma
In the circuit shown in fig. when the switch is closed, the capacitor charges with a time constant.
06
Dec
In the circuit shown in fig. when the switch is closed, the capacitor charges with a time constant. In the circuit shown in fig. when the switch is closed the capacitor charges with a time constant December 6, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 19 - Electric Resistance and Simple [...]
The equivalent resistance between points A and B in the figure at steady state will be
06
Dec
The equivalent resistance between points A and B in the figure at steady state will be The equivalent resistance between points A and B in the figure at steady state will be December 6, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 19 - Electric Resistance and Simple Circuits ,
Current through the battery at the instance when the switch S is closed is.
06
Dec
Current through the battery at the instance when the switch S is closed is. Current through the battery at the instance when the switch S is closed is. December 6, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 19 - Electric Resistance and Simple Circuits ,
A capacitor C is connected to the two equal resistances as shown in fig. What is the ratio of the time constant during charging and discharging of the capacitance?
06
Dec
A capacitor C is connected to the two equal resistances as shown in fig. What is the ratio of the time constant during charging and discharging of the capacitance? A capacitor C is connected to the two equal resistances as shown in fig. What is the ratio of the time constant during charging and discharging [...]
When the switch is closed, then the initial current through 1Ω resistor is (see Figure)
06
Dec
When the switch is closed, then the initial current through 1Ω resistor is (see Figure) then the initial current through 1Ω resistor is (see Figure) when the switch is closed. December 6, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 19 - Electric Resistance and Simple Circuits ,
A capacitor is discharged through a resistance. The stored energy U0 in one capacitive time constant falls to
06
Dec
A capacitor is discharged through a resistance. The stored energy U0 in one capacitive time constant falls to A capacitor is discharged through a resistance. The stored energy U0 in one capacitive time constant falls to December 6, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 19 - Electric Resistance and Simple [...]
In the given circuit, with steady current, the potential drop across the capacitor must be:
06
Dec
In the given circuit, with steady current, the potential drop across the capacitor must be: In the given circuit the potential drop across the capacitor must be: with steady current December 6, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 19 - Electric Resistance and Simple Circuits ,
For a cell, a graph is plotted between the potential difference V across the terminals of the cell and the current I drawn the cell. The emf and the internal resistance of the cell are E and r, respectively. Then
06
Dec
For a cell, a graph is plotted between the potential difference V across the terminals of the cell and the current I drawn the cell. The emf and the internal resistance of the cell are E and r, respectively. Then a graph is plotted between the potential difference V across the terminals of the cell [...]
Figure shows a Wheatstone bridge circuit. Which of the following correctly shows the currents I1, I2 and I3 in the decreasing order of magnitude ?
06
Dec
Figure shows a Wheatstone bridge circuit. Which of the following correctly shows the currents I1, I2 and I3 in the decreasing order of magnitude ? Figure shows a Wheatstone bridge circuit. Which of the following correctly shows the currents I1 I2 and I3 in the decreasing order of magnitude ? December 6, 2020 Category: Cengage [...]
A wire of length L and 3 identical cells of negligible internal resistances are connected in series. Due to the current, the temperature of the wire is raised by ΔT in a time t. A number N of similar cells is now connected in series with a wire of the same material and cross-section but the length 2 L. The temperature of the wire is raised by the same amount `Delta T` in the same time t. the value of N is
06
Dec
A wire of length L and 3 identical cells of negligible internal resistances are connected in series. Due to the current, the temperature of the wire is raised by ΔT in a time t. A number N of similar cells is now connected in series with a wire of the same material and cross-section but [...]