Chapter 22 – Current Electricity
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Two batteries of emf 4 V and 8 V with internal resistance 1 Ω and 2 Ωare connected in a circuit with a resistance of 9 Ω as shown in figure. The current and potential difference between the points P and Q are
17
Aug
Two batteries of emf 4 V and 8 V with internal resistance 1 Ω and 2 Ωare connected in a circuit with a resistance of 9 Ω as shown in figure. The current and potential difference between the points P and Q are For a cell the internal resistance (r) of cell is the terminal [...]
For a cell, the terminal potential difference is 2.2 V when circuit is open and reduces to 1.8 V when cell is connected to a resistance R = 5 Ω, the internal resistance (r) of cell is
17
Aug
For a cell, the terminal potential difference is 2.2 V when circuit is open and reduces to 1.8 V when cell is connected to a resistance R = 5 Ω, the internal resistance (r) of cell is For a cell the internal resistance (r) of cell is the terminal potential difference is 2.2 V when [...]
A battery is charged at a potential of 15 V for 8 h when the current flowing is 10 A. The battery on discharge supplies a current of 5 A for 15 h. The mean terminal voltage during discharge is 14 V. The watt- hour efficiency of the battery is
17
Aug
A battery is charged at a potential of 15 V for 8 h when the current flowing is 10 A. The battery on discharge supplies a current of 5 A for 15 h. The mean terminal voltage during discharge is 14 V. The watt- hour efficiency of the battery is In a Wheatstone bridge resistance [...]
In India, electricity is supplied for domestic use at 220 V. It is supplied at 110 V in USA. If the resistance of a 60 W bulb for use in India is R, the resistance of a 60 W bulb for use in USA will be
17
Aug
In India, electricity is supplied for domestic use at 220 V. It is supplied at 110 V in USA. If the resistance of a 60 W bulb for use in India is R, the resistance of a 60 W bulb for use in USA will be electricity is supplied for domestic use at 220 V. [...]
Direct current is passed through copper sulphate solution using platinum electrodes. The elements liberated at the electrodes are
17
Aug
Direct current is passed through copper sulphate solution using platinum electrodes. The elements liberated at the electrodes are Direct current is passed through copper sulphate solution using platinum electrodes. The elements liberated at the electrodes are August 17, 2020 Category: Chapter 22 - Current Electricity , NEET Last 32 Years Solved 1988 - 2019 Physics [...]
In electrolysis the mass deposited on an electrode is directly proportional to
17
Aug
In electrolysis the mass deposited on an electrode is directly proportional to In electrolysis the mass deposited on an electrode is directly proportional to August 17, 2020 Category: Chapter 22 - Current Electricity , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
If nearly 10^5 coulomb liberate 1g equivalent of aluminium, then the amount of aluminium (equivalent weight 9) deposited through electrolysis in 20 minutes by a current of 50 amp will be
17
Aug
If nearly 10^5 coulomb liberate 1g equivalent of aluminium, then the amount of aluminium (equivalent weight 9) deposited through electrolysis in 20 minutes by a current of 50 amp will be If nearly 10^5 coulomb liberate 1g equivalent of aluminium then the amount of aluminium (equivalent weight 9) deposited through electrolysis in 20 minutes by [...]
A cell has an emf 1.5 V. When connected across an external resistance of 2 Ω, the terminal potential difference falls to 1.0 V . The internal resistance of the cell is
17
Aug
A cell has an emf 1.5 V. When connected across an external resistance of 2 Ω, the terminal potential difference falls to 1.0 V . The internal resistance of the cell is A cell has an emf 1.5 V. When connected across an external resistance of 2 Ω the terminal potential difference falls to 1.0 [...]
A potentiometer consists of a wire of length 4 m and resistance 10Ω. It is connected to a cell of emf 2 V. The potential gradient of the wire is
17
Aug
A potentiometer consists of a wire of length 4 m and resistance 10Ω. It is connected to a cell of emf 2 V. The potential gradient of the wire is A potentiometer consists of a wire of length 4 m and resistance 10Ω. It is connected to a cell of emf 2 V. The potential [...]
A 6 V battery is connected to the terminals of a 3m long wire of uniform thickness and resistance of 100Ω. The difference of potential between two points on the wire separated by a distance of 50 cm will be
17
Aug
A 6 V battery is connected to the terminals of a 3m long wire of uniform thickness and resistance of 100Ω. The difference of potential between two points on the wire separated by a distance of 50 cm will be In a Wheatstone bridge resistance of each of the four sides is 10 Ω. If [...]