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A potentiometer wire of length L and resistance 10Ω is connected in series with a battery of emf 2.5V and a resistance in its primary circuit. The null point corresponding to a cell of a emf 1V is obtained at a distance L/2. If the resistance in the primary circuit is doubled then the position of new null point will be.
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Dec
A potentiometer wire of length L and resistance 10Ω is connected in series with a battery of emf 2.5V and a resistance in its primary circuit. The null point corresponding to a cell of a emf 1V is obtained at a distance L/2. If the resistance in the primary circuit is doubled then the position [...]
A microammeter has as resistance of 100Ω and full scale range of 50μA. It can be used a voltmeter or as a higher range ammeter provided a resistance is added to it. Pick the correct range and resistance combinations
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Dec
A microammeter has as resistance of 100Ω and full scale range of 50μA. It can be used a voltmeter or as a higher range ammeter provided a resistance is added to it. Pick the correct range and resistance combinations The current i5 is December 1, 2020 Category: Cengage NEET by C.P Singh , Chapter 3 [...]
A galvanometer with 50 divisions on the scale has a resistance of 25Ω. A current of 2×10^−4 A gives a deflection of one scale division. The additional series required to convert it into a voltmeter reading up to 25V is.
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A galvanometer with 50 divisions on the scale has a resistance of 25Ω. A current of 2×10^−4 A gives a deflection of one scale division. The additional series required to convert it into a voltmeter reading up to 25V is. The current i5 is December 1, 2020 Category: Cengage NEET by C.P Singh , Chapter [...]
A battery is charged at a potential for 15 V for 8 h when the current following is 10A. The battery on discharge supplies a current of 5A for 15h . The mean terminal voltage during discharge is 14V. The watt-hour efficiency of the battery is
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Dec
A battery is charged at a potential for 15 V for 8 h when the current following is 10A. The battery on discharge supplies a current of 5A for 15h . The mean terminal voltage during discharge is 14V. The watt-hour efficiency of the battery is The current i5 is December 1, 2020 Category: Cengage [...]
The n rows each containing m cells in series are joined parallel. Maximum current is taken from this combination across an external resistance of 3Ω resistance. If the total number of cells used are 24 and internal resistance of each cell is 0.5Ω then
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Dec
The n rows each containing m cells in series are joined parallel. Maximum current is taken from this combination across an external resistance of 3Ω resistance. If the total number of cells used are 24 and internal resistance of each cell is 0.5Ω then The current i5 is December 1, 2020 Category: Cengage NEET by [...]
You are given several identical resistors each of value 10Ω and each capable of carrying a maximum current of 1 A. It is required to make a suitable combination of these to resistances to produce a resistance of 5Ω which can carry a current of 4 A. The minimum number of resistors required for this job is
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Dec
You are given several identical resistors each of value 10Ω and each capable of carrying a maximum current of 1 A. It is required to make a suitable combination of these to resistances to produce a resistance of 5Ω which can carry a current of 4 A. The minimum number of resistors required for this [...]
The current i5 is
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Dec
The current i5 is The current i5 is December 1, 2020 Category: Cengage NEET by C.P Singh , Chapter 3 - Current Electricity , Part 2 ,