Chapter 22 – Current Electricity
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A circuit contains an ammeter ,a battery of 30 V and a resistance of 40.8 ohm all connected series. If the ammeter has a coil of resistance 480 ohm and a shunt of 20 ohm, the reading in the ammeter will be
22
Aug
A circuit contains an ammeter ,a battery of 30 V and a resistance of 40.8 ohm all connected series. If the ammeter has a coil of resistance 480 ohm and a shunt of 20 ohm, the reading in the ammeter will be a battery of 30 V and a resistance of 40.8 ohm all connected [...]
Two metal wires of identical dimension are connected in series. If σ1 and σ2 are the conductivities of the metal wires respectively, the effective conductivity of the combination is
22
Aug
Two metal wires of identical dimension are connected in series. If σ1 and σ2 are the conductivities of the metal wires respectively, the effective conductivity of the combination is the effective conductivity of the combination is Two metal wires of identical dimension are connected in series. If σ1 and σ2 are the conductivities of the [...]
Across a metallic conductor of non-uniform cross-section a constant potential difference is applied. The quantity which remain constant along the conductor is
22
Aug
Across a metallic conductor of non-uniform cross-section a constant potential difference is applied. The quantity which remain constant along the conductor is Across a metallic conductor of non-uniform cross-section a constant potential difference is applied. The quantity which remain constant along the conductor is August 22, 2020 Category: Chapter 22 - Current Electricity , NEET [...]
If power dissipated in the 9Ω resistor in the circuit shown is 36 Watt, the potential difference across the 2Ω resistor is
22
Aug
If power dissipated in the 9Ω resistor in the circuit shown is 36 Watt, the potential difference across the 2Ω resistor is If power dissipated in the 9Ω resistor in the circuit shown is 36 Watt the potential difference across the 2Ω resistor is August 22, 2020 Category: Chapter 22 - Current Electricity , NEET [...]
A, B and C are voltmeters of resistance R, 1.5 R and 3R respectively as shown in the figure. When some potential difference is applied between X and Y, the voltmeter reading are VA, VB and VC respectively. Then
22
Aug
A, B and C are voltmeters of resistance R, 1.5 R and 3R respectively as shown in the figure. When some potential difference is applied between X and Y, the voltmeter reading are VA, VB and VC respectively. Then 1.5 R and 3R respectively as shown in the figure. When some potential difference is applied [...]
A carbon resistor of (47 ± 4.7)kΩ is to be marked with rings of different colours for its identification. The colour code sequence will be
22
Aug
A carbon resistor of (47 ± 4.7)kΩ is to be marked with rings of different colours for its identification. The colour code sequence will be A carbon resistor of (47 ± 4.7)kΩ is to be marked with rings of different colours for its identification. The colour code sequence will be August 22, 2020 Category: Chapter [...]
The resistance of a wire is R ohm. If it is melted and stretched to n times its original length, its new resistance will be
22
Aug
The resistance of a wire is R ohm. If it is melted and stretched to n times its original length, its new resistance will be its new resistance will be The resistance of a wire is R ohm. If it is melted and stretched to n times its original length August 22, 2020 Category: Chapter [...]
A, B and C are three points in a uniform electric field. The electric potential is
18
Aug
A, B and C are three points in a uniform electric field. The electric potential is B and C are three points in a uniform electric field. The electric potential is August 18, 2020 Category: Chapter 22 - Current Electricity , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , [...]
A bridge circuit is shown in figure. The equivalent resistance between A and B will be
18
Aug
A bridge circuit is shown in figure. The equivalent resistance between A and B will be A bridge circuit is shown in figure. The equivalent resistance between A and B will be August 18, 2020 Category: Chapter 22 - Current Electricity , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions [...]
In a Wheatstone bridge, all the four arms have equal resistance R. If the resistance of the galvanometer arm is also R, the equivalent resistance of the combination as seen by the battery is
18
Aug
In a Wheatstone bridge, all the four arms have equal resistance R. If the resistance of the galvanometer arm is also R, the equivalent resistance of the combination as seen by the battery is all the four arms have equal resistance R. If the resistance of the galvanometer arm is also R In a Wheatstone [...]