Chapter 3 – Current Electricity
Sahay Sir > Question Answers > Arihant Physics by D.C Pandey > Volume 2 > Chapter 3 - Current Electricity
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 [...]
Time taken by a 836 W heater to heat one litre of water from 10^∘ C to 40^∘ C is:
05
Dec
Time taken by a 836 W heater to heat one litre of water from 10^∘ C to 40^∘ C is: Time taken by a 836 W heater to heat one litre of water from 10^∘ C to 40^∘ C is: December 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity [...]
The thermistors are usually made of
05
Dec
The thermistors are usually made of The thermistors are usually made of December 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity , Volume 2 ,
The resistance of the series combination of two resistances is S. When they are joined in parallel the total resistance is P. If S= nP then the minimum possible value of n is
05
Dec
The resistance of the series combination of two resistances is S. When they are joined in parallel the total resistance is P. If S= nP then the minimum possible value of n is The resistance of the series combination of two resistances is S. When they are joined in parallel the total resistance is P. [...]
The total current supplied to the circuit by the battery is
05
Dec
The total current supplied to the circuit by the battery is The total current supplied to the circuit by the battery is December 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity , Volume 2 ,
The resistance of a hot tungsten filament is about 10 times the cold resistance. What will be the resistance of 100 W, 200 V lamp when not in use?
05
Dec
The resistance of a hot tungsten filament is about 10 times the cold resistance. What will be the resistance of 100 W, 200 V lamp when not in use? 200 V lamp when not in use? The resistance of a hot tungsten filament is about 10 times the cold resistance. What will be the resistance [...]
In a potentiometer experiment, the balancing with a cell is at length 240cm. On shunting the cell with a resistance of 2Ω , the balancing length becomes 120cm. The internal resistance of the cell is
05
Dec
In a potentiometer experiment, the balancing with a cell is at length 240cm. On shunting the cell with a resistance of 2Ω , the balancing length becomes 120cm. The internal resistance of the cell is In a potentiometer experiment the balancing length becomes 120cm. The internal resistance of the cell is the balancing with a [...]