Volume 2
In a Wheatstone bridge (see fig.), Resistances P and Q are approximately equal. When R=400Ω, the bridge is equal. When R=400Ω,the bridge is balanced. On inter-changing P and Q, the value of R, for balance, is 405 Ω. The value of X is close to :
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Dec
In a Wheatstone bridge (see fig.), Resistances P and Q are approximately equal. When R=400Ω, the bridge is equal. When R=400Ω,the bridge is balanced. On inter-changing P and Q, the value of R, for balance, is 405 Ω. The value of X is close to : for balance In a Wheatstone bridge (see fig.) is [...]
Two equal resistances when connected in series to a battery ,consume electric power of 60 W .If these resistances are now connected in parallel combination to the same battery ,the electric power consumed will be :
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Dec
Two equal resistances when connected in series to a battery ,consume electric power of 60 W .If these resistances are now connected in parallel combination to the same battery ,the electric power consumed will be : consume electric power of 60 W .If these resistances are now connected in parallel combination to the same battery [...]
The resistance of the meter bridge AB in given figure is 4 Ω .With a cell of emf ε=0.5V and rheostat resistance Rh=2Ω the null point is obtained at some point J is found for Rh=6Ω The emf ε2 is
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Dec
The resistance of the meter bridge AB in given figure is 4 Ω .With a cell of emf ε=0.5V and rheostat resistance Rh=2Ω the null point is obtained at some point J is found for Rh=6Ω The emf ε2 is The resistance of the meter bridge AB in given figure is 4 Ω .With a [...]
The actual value of resistance R, shown in the figure is 30Ω. This is measured in an experiment as shown using the standard formula R=V/I, where V and I are the readings of the voltmeter and ammeter, respectively. If the measured value of R is 5% less, then the internal resistance of the voltmeter is
05
Dec
The actual value of resistance R, shown in the figure is 30Ω. This is measured in an experiment as shown using the standard formula R=V/I, where V and I are the readings of the voltmeter and ammeter, respectively. If the measured value of R is 5% less, then the internal resistance of the voltmeter is [...]
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respectively. If the measured value of R is 5% less ,
shown in the figure is 30Ω. This is measured in an experiment as shown using the standard formula R=V/I ,
The actual value of resistance R ,
then the internal resistance of the voltmeter is ,
where V and I are the readings of the voltmeter and ammeter ,
A current of 2 mA was passed through an unknown resistor which dissipated a power of 4.4 W. Dissipated power when an ideal power supply of 11 V is connected across it is
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Dec
A current of 2 mA was passed through an unknown resistor which dissipated a power of 4.4 W. Dissipated power when an ideal power supply of 11 V is connected across it is A current of 2 mA was passed through an unknown resistor which dissipated a power of 4.4 W. Dissipated power when an [...]
A uniform metallic wire has a resistance of 18 Ω and is bent into an equilateral triangle. Then, the resistance between any two vertices of the triangle is :
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Dec
A uniform metallic wire has a resistance of 18 Ω and is bent into an equilateral triangle. Then, the resistance between any two vertices of the triangle is : A uniform metallic wire has a resistance of 18 Ω and is bent into an equilateral triangle. Then the resistance between any two vertices of the [...]
A 2 W carbon resistor is color-coded with green, black, red and brown respectively. The maximum current which can be passed through this resistor is :
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Dec
A 2 W carbon resistor is color-coded with green, black, red and brown respectively. The maximum current which can be passed through this resistor is : A 2 W carbon resistor is color-coded with green black red and brown respectively. The maximum current which can be passed through this resistor is : December 5, 2020 [...]
A potentiometer wire AB having length L and resistance 12 r is joined to a cell D of emf ε/2 and internal resistance 3r is connected. The length AJ at which the galvanometer as shown in fig shows no deflection is :
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Dec
A potentiometer wire AB having length L and resistance 12 r is joined to a cell D of emf ε/2 and internal resistance 3r is connected. The length AJ at which the galvanometer as shown in fig shows no deflection is : Determine the charge on the capacitor in the following circuit : December 5, [...]
A carbon resistance has a following color code. What is the value of the resistance ?
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Dec
A carbon resistance has a following color code. What is the value of the resistance ? A carbon resistance has a following color code. What is the value of the resistance ? December 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity , Volume 2 ,
In the given circuit the internal resistance of the 18 V cell is negligible. If R1 = 400Ω, R3 =100Ω and R4 = 500Ω and the reading of an ideal voltmeter across R4 is 5V, then the value R2 will be :
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Dec
In the given circuit the internal resistance of the 18 V cell is negligible. If R1 = 400Ω, R3 =100Ω and R4 = 500Ω and the reading of an ideal voltmeter across R4 is 5V, then the value R2 will be : In the given circuit the internal resistance of the 18 V cell [...]