Chapter 3 – Current Electricity
Sahay Sir > Question Answers > Arihant Physics by D.C Pandey > Volume 2 > Chapter 3 - Current Electricity
If an electric heater is rated at 1000W, then the time required to heat one litre of water from 20^oC to 100^oC will be?
06
Dec
If an electric heater is rated at 1000W, then the time required to heat one litre of water from 20^oC to 100^oC will be? If an electric heater is rated at 1000W then the time required to heat one litre of water from 20^oC to 100^oC will be? December 6, 2020 Category: Arihant Physics by [...]
A capacitor of capacitance 2 uF is connected as shown in figure the internal resistance of the cell is 0.5 ohm. The amount of charge on capacitor plates is
06
Dec
A capacitor of capacitance 2 uF is connected as shown in figure the internal resistance of the cell is 0.5 ohm. The amount of charge on capacitor plates is A capacitor of capacitance 2 uF is connected as shown in figure the internal resistance of the cell is 0.5 ohm. The amount of charge on [...]
A charged capacitor is allowed to discharge through a resistor by closing the key at the instant t=0 (see Figure). At the instant t=(ln4)μs, the reading of the ammeter falls half the initial value. The resistance of the ammeter is equal to
06
Dec
A charged capacitor is allowed to discharge through a resistor by closing the key at the instant t=0 (see Figure). At the instant t=(ln4)μs, the reading of the ammeter falls half the initial value. The resistance of the ammeter is equal to A charged capacitor is allowed to discharge through a resistor by closing the [...]
The 80Ω galvanometer deflects full scale for a potential of 20 mV. A voltmeter deflecting full scale of 5 V is to made using this galvanometer. We must connect
06
Dec
The 80Ω galvanometer deflects full scale for a potential of 20 mV. A voltmeter deflecting full scale of 5 V is to made using this galvanometer. We must connect The 80Ω galvanometer deflects full scale for a potential of 20 mV. A voltmeter deflecting full scale of 5 V is to made using this galvanometer. [...]
A certain galvanometer has a resistance of 400 Ω and deflects full scale for a current of 0.2 mA through it. The shunt resistance required to convert it into an ammeter is
06
Dec
A certain galvanometer has a resistance of 400 Ω and deflects full scale for a current of 0.2 mA through it. The shunt resistance required to convert it into an ammeter is A certain galvanometer has a resistance of 400 Ω and deflects full scale for a current of 0.2 mA through it. The shunt [...]
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 [...]