Volume 2
A lamp having tungsten filament consumes 50 W. Assume the temperature coefficient of resistance for tungsten is 4.5×10^−3 /^oC and the room temperature is 20^oC. If the lamp burns, the temperature of its filament becomes 2500^oC, then the power consumed at the moment switch is on, is?
03
Dec
A lamp having tungsten filament consumes 50 W. Assume the temperature coefficient of resistance for tungsten is 4.5×10^−3 /^oC and the room temperature is 20^oC. If the lamp burns, the temperature of its filament becomes 2500^oC, then the power consumed at the moment switch is on, is? A lamp having tungsten filament consumes 50 W. [...]
Which bulb will fuse when two bulbs are rated as (25 W and 220 V) and (100 W and 220 V) are connected in series to 40 V ?
03
Dec
Which bulb will fuse when two bulbs are rated as (25 W and 220 V) and (100 W and 220 V) are connected in series to 40 V ? Which bulb will fuse when two bulbs are rated as (25 W and 220 V) and (100 W and 220 V) are connected in series to [...]
The amount of heat generated in 500Ω resistance, when the key is thrown over from contact 1 to 2, as shown in figure is?
03
Dec
The amount of heat generated in 500Ω resistance, when the key is thrown over from contact 1 to 2, as shown in figure is? as shown in figure is? The amount of heat generated in 500Ω resistance when the key is thrown over from contact 1 to 2 December 3, 2020 Category: Arihant Physics by [...]
A battery of emf E is connected across the circuit. The value of R for which heat generated in the circuit is maximum, is?
03
Dec
A battery of emf E is connected across the circuit. The value of R for which heat generated in the circuit is maximum, is? A battery of emf E is connected across the circuit. The value of R for which heat generated in the circuit is maximum is December 3, 2020 Category: Arihant Physics by [...]
The power consumed by 4 V battery in the circuit as shown is :
03
Dec
The power consumed by 4 V battery in the circuit as shown is : The power consumed by 4 V battery in the circuit as shown is : December 3, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity , Volume 2 ,
The figure shows a battery charger. The value of R so, that 25W of power is delivered to the 11V ideal voltage source is?
03
Dec
The figure shows a battery charger. The value of R so, that 25W of power is delivered to the 11V ideal voltage source is? that 25W of power is delivered to the 11V ideal voltage source is? The figure shows a battery charger. The value of R so December 3, 2020 Category: Arihant Physics by [...]
Two bulbs when connected in parallel to a source take 100W each. The total power consumed when they are connected in series with the same source is?
03
Dec
Two bulbs when connected in parallel to a source take 100W each. The total power consumed when they are connected in series with the same source is? Two bulbs when connected in parallel to a source take 100W each. The total power consumed when they are connected in series with the same source is? December [...]
A constant current is passed through a uniform metallic wire. If both the length and radius of the wire are doubled, then?
03
Dec
A constant current is passed through a uniform metallic wire. If both the length and radius of the wire are doubled, then? A constant current is passed through a uniform metallic wire. If both the length and radius of the wire are doubled then December 3, 2020 Category: Arihant Physics by D.C Pandey , Chapter [...]
In the circuit that is given, the heat developed per second between A and B will be :
03
Dec
In the circuit that is given, the heat developed per second between A and B will be : In the circuit that is given the heat developed per second between A and B will be : December 3, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity , Volume 2 ,
In the circuit shown in the figure the heat produced in the 5 ohm resistor due to the current flowing in it is 10 calories per second. The heat generated in the 4 ohm resistor is
03
Dec
In the circuit shown in the figure the heat produced in the 5 ohm resistor due to the current flowing in it is 10 calories per second. The heat generated in the 4 ohm resistor is In the circuit shown in the figure the heat produced in the 5 ohm resistor due to the current [...]