Arihant Physics by D.C Pandey
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 :
05
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 :
05
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 :
05
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 ?
05
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 :
05
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 [...]
When the switch S, in the circuit shown, is closed, then the value of current i will be :
05
Dec
When the switch S, in the circuit shown, is closed, then the value of current i will be : In the circuit shown is closed then the value of current i will be : When the switch S December 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity , Volume [...]
A resistance is shown in the figure. Its value and tolerance are given respectively by :
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Dec
A resistance is shown in the figure. Its value and tolerance are given respectively by : A resistance is shown in the figure. Its value and tolerance are given respectively by : December 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity , Volume 2 ,
A copper wire is stretched to make it 0.5 % longer. The percentage change in its electrical resistance if its volume remains unchanged is :
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Dec
A copper wire is stretched to make it 0.5 % longer. The percentage change in its electrical resistance if its volume remains unchanged is : A copper wire is stretched to make it 0.5 % longer. The percentage change in its electrical resistance if its volume remains unchanged is : December 5, 2020 Category: Arihant [...]
Drift speed of electrons, when 1.5 A of current flows in a copper wire of cross section 5 mm^2 , is v. If the electron density in copper is 9×10^28/m^3 the value of v in mm/s close to (Take charge of electron to be =1.6×10^−19C)
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Dec
Drift speed of electrons, when 1.5 A of current flows in a copper wire of cross section 5 mm^2 , is v. If the electron density in copper is 9×10^28/m^3 the value of v in mm/s close to (Take charge of electron to be =1.6×10^−19C) Drift speed of electrons is v. If the electron density [...]
The resistive network shown below is connected to a D.C. source of 16 V. The power consumed by the network is 4 Watt. The value of R is :
05
Dec
The resistive network shown below is connected to a D.C. source of 16 V. The power consumed by the network is 4 Watt. The value of R is : The resistive network shown below is connected to a D.C. source of 16 V. The power consumed by the network is 4 Watt. The value of [...]