Chapter 19 – Electric Resistance and Simple Circuits
Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 19 - Electric Resistance and Simple Circuits
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 [...]
In Figure, find the value of resistor to be connected between C and D , so that the resistance of the entire circuit between circuit between A and B does not change with the number of elementary sets.
06
Dec
In Figure, find the value of resistor to be connected between C and D , so that the resistance of the entire circuit between circuit between A and B does not change with the number of elementary sets. find the value of resistor to be connected between C and D In figure so that the [...]
Find out the value of resistance R in fig.
06
Dec
Find out the value of resistance R in fig. Find out the value of resistance R in fig. December 6, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 19 - Electric Resistance and Simple Circuits ,
What resistor should be connected in parallel with the 20Ω resistor in branch ADC in the circuit shown in fig. so that potential difference between B and D may be zero ?
06
Dec
What resistor should be connected in parallel with the 20Ω resistor in branch ADC in the circuit shown in fig. so that potential difference between B and D may be zero ? What resistor should be connected in parallel with the 20Ω resistor in branch ADC in the circuit shown in fig. so that potential [...]
In the network shown in Figure, the potential difference across A and B is.
06
Dec
In the network shown in Figure, the potential difference across A and B is. In the network shown in Figure the potential difference across A and B is. December 6, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 19 - Electric Resistance and Simple Circuits ,
n identical cells, each of emf E and internal resistance r, are joined in series to form a closed circuit. One of the cell A is joined with reversed polarity. The potential difference across each cell except A, is
06
Dec
n identical cells, each of emf E and internal resistance r, are joined in series to form a closed circuit. One of the cell A is joined with reversed polarity. The potential difference across each cell except A, is are joined in series to form a closed circuit. One of the cell A is joined [...]
n identical cells, each of e.m.f ε and internal resistance r, are joined in series to form a closed circuit. The potential difference across any one cell is :
06
Dec
n identical cells, each of e.m.f ε and internal resistance r, are joined in series to form a closed circuit. The potential difference across any one cell is : are joined in series to form a closed circuit. The potential difference across any one cell is : each of e.m.f ε and internal resistance r [...]
N identical cells are connected to form a battery. When the terminals of the battery are joined directly short-circuited current I flows in the circuit. To obtain the the maximum value of I.
06
Dec
N identical cells are connected to form a battery. When the terminals of the battery are joined directly short-circuited current I flows in the circuit. To obtain the the maximum value of I. N identical cells are connected to form a battery. When the terminals of the battery are joined directly short-circuited current I flows [...]
The emf of a cell is ε and its internal resistance is r. Its terminals are connected to a resistance R. The potential difference between the terminals is 1.6V for R=4Ω, and 1.8 V for R=9Ω. Then
06
Dec
The emf of a cell is ε and its internal resistance is r. Its terminals are connected to a resistance R. The potential difference between the terminals is 1.6V for R=4Ω, and 1.8 V for R=9Ω. Then and 1.8 V for R=9Ω. Then The emf of a cell is ε and its internal resistance is [...]