Arihant Physics by D.C Pandey
The bob of a simple pendulum has mass 2g and a charge of 5.0μC. It is at rest in a uniform horizontal electric field of intensity 2000 V/m. At equilibrium, the angle that the pendulum makes with the vertical is : (take g=10 m/s^2 ).
05
Dec
The bob of a simple pendulum has mass 2g and a charge of 5.0μC. It is at rest in a uniform horizontal electric field of intensity 2000 V/m. At equilibrium, the angle that the pendulum makes with the vertical is : (take g=10 m/s^2 ). the angle that the pendulum makes with the vertical is [...]
The mass of a product liberated on anode in an electrochemical cell depends on
05
Dec
The mass of a product liberated on anode in an electrochemical cell depends on The mass of a product liberated on anode in an electrochemical cell depends on December 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity , Volume 2 ,
If in the circuit power dissipation is 150 W, then R is
05
Dec
If in the circuit power dissipation is 150 W, then R is If in the circuit power dissipation is 150 W then R is December 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity , Volume 2 ,
A wire when connected to 220V mains supply has power dissipation P1. Now the wire is cut into two equal pieces which are connected in parallel to the same supply. Power dissipation in this case is P2 . Then P2 : P1 is
05
Dec
A wire when connected to 220V mains supply has power dissipation P1. Now the wire is cut into two equal pieces which are connected in parallel to the same supply. Power dissipation in this case is P2 . Then P2 : P1 is The thermistors are usually made of December 5, 2020 Category: Arihant Physics [...]
A 220 volt – 1000 watt bulb is connected across a 110 volt mains supply. The power consumed will be
05
Dec
A 220 volt – 1000 watt bulb is connected across a 110 volt mains supply. The power consumed will be A 220 volt - 1000 watt bulb is connected across a 110 volt mains supply. The power consumed will be December 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity [...]
The length of a given cylindrical wire is increased by 100%. Due to the consequent decrease in diameter the change in the resistance of the wire will be
05
Dec
The length of a given cylindrical wire is increased by 100%. Due to the consequent decrease in diameter the change in the resistance of the wire will be The length of a given cylindrical wire is increased by 100%. Due to the consequent decrease in diameter the change in the resistance of the wire will [...]
A 3 volt battery with negligible internal resistance is connected in a circuit as shown in the figure. The current I, in the circuit will be
05
Dec
A 3 volt battery with negligible internal resistance is connected in a circuit as shown in the figure. The current I, in the circuit will be A 3 volt battery with negligible internal resistance is connected in a circuit as shown in the figure. The current I in the circuit will be December 5, 2020 [...]
The negative Zn pole of a Daniell cell, sending a constant current through a circuit, decreases in mass by 0.13 g in 30 minutes. If the electrochemical equivalent of Zn and Cu are 32.5 and 31.5 respectively, the increase in the mass of the positive. Cu pole in this time is
05
Dec
The negative Zn pole of a Daniell cell, sending a constant current through a circuit, decreases in mass by 0.13 g in 30 minutes. If the electrochemical equivalent of Zn and Cu are 32.5 and 31.5 respectively, the increase in the mass of the positive. Cu pole in this time is decreases in mass by [...]
The electrochemical equivalent of a metal is 3.3×10^−7 kg per coulomb. The mass of the metal liberated at the cathode when a 3 A current is passed for 2 seconds, will be:
05
Dec
The electrochemical equivalent of a metal is 3.3×10^−7 kg per coulomb. The mass of the metal liberated at the cathode when a 3 A current is passed for 2 seconds, will be: The electrochemical equivalent of a metal is 3.3×10^−7 kg per coulomb. The mass of the metal liberated at the cathode when a 3 [...]
The thermo-emf of a thermocouple varies with the temperature θ of the hot junction as E=aθ+bθ^2 in volts where the ratio a/b is 700^ 0 C. If the cold junction is kept at 0^0 C, then the neutral temperature is:
05
Dec
The thermo-emf of a thermocouple varies with the temperature θ of the hot junction as E=aθ+bθ^2 in volts where the ratio a/b is 700^ 0 C. If the cold junction is kept at 0^0 C, then the neutral temperature is: The thermo-emf of a thermocouple varies with the temperature θ of the hot junction as [...]