Volume 2
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 [...]
A heater coil is cut into two equal parts and only one part is now used in the heater. The heat generated will now be
05
Dec
A heater coil is cut into two equal parts and only one part is now used in the heater. The heat generated will now be A heater coil is cut into two equal parts and only one part is now used in the heater. The heat generated will now be December 5, 2020 Category: Arihant [...]
Two sources of equal emf are connected to an external resistance R. The internal resistance of the two sources are R1 and R2 (R1 > R2 ). If the potential difference across the source having internal resistance R2 is zero, then:
05
Dec
Two sources of equal emf are connected to an external resistance R. The internal resistance of the two sources are R1 and R2 (R1 > R2 ). If the potential difference across the source having internal resistance R2 is zero, then: If a wire is stretched to make it 0.1 % longer its resistance will [...]
In the circuit, the galvanometer G shows zero deflection. If the batteries A and B have negligible internal resistance, the value of resistor R will be
05
Dec
In the circuit, the galvanometer G shows zero deflection. If the batteries A and B have negligible internal resistance, the value of resistor R will be In the circuit the galvanometer G shows zero deflection. If the batteries A and B have negligible internal resistance the value of resistor R will be December 5, 2020 [...]
Two voltmeters, one of copper and another of silver are joined in parallel. When a total charge q flows through voltmeters, equal amount of metals are deposited. If the electrochemical equivalents of Cu and Ag are z1 and z2 respectively then charges flows through the silver voltmeter is
05
Dec
Two voltmeters, one of copper and another of silver are joined in parallel. When a total charge q flows through voltmeters, equal amount of metals are deposited. If the electrochemical equivalents of Cu and Ag are z1 and z2 respectively then charges flows through the silver voltmeter is equal amount of metals are deposited. [...]
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equal amount of metals are deposited. If the electrochemical equivalents of Cu and Ag are z1 and z2 respectively then charges flows through the silver voltmeter is ,
one of copper and another of silver are joined in parallel. When a total charge q flows through voltmeters ,
Two voltmeters ,
The current I drawn from the 5 V source will be
05
Dec
The current I drawn from the 5 V source will be The current I drawn from the 5 V source will be December 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity , Volume 2 ,
In a Wheatstone bridge, three resistances P, Q and R are connected in the three arms and the fourth arm is formed by two resistances S1 and S2 connected in parallel. The condition for the bridge to be balanced will be
05
Dec
In a Wheatstone bridge, three resistances P, Q and R are connected in the three arms and the fourth arm is formed by two resistances S1 and S2 connected in parallel. The condition for the bridge to be balanced will be In a Wheatstone bridge Q and R are connected in the three arms [...]
The resistance of a bulb filament is 100Ω at a temperature at 100^o C. If its temperature coefficient of resistance be 0.005/ degree C, then its resistance will become 200Ω at a temperature of
05
Dec
The resistance of a bulb filament is 100Ω at a temperature at 100^o C. If its temperature coefficient of resistance be 0.005/ degree C, then its resistance will become 200Ω at a temperature of The resistance of a bulb filament is 100Ω at a temperature at 100^o C. If its temperature coefficient of resistance be [...]
An electric bulb is rated 220 volt-100 watt, Power consumed by it when operated on 110 volt will be :
05
Dec
An electric bulb is rated 220 volt-100 watt, Power consumed by it when operated on 110 volt will be : An electric bulb is rated 220 volt-100 watt Power consumed by it when operated on 110 volt will be : December 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity [...]
A material ‘B’ has twice the specific resistance of ‘A’. A circular wire made of ‘B’ has twice the diameter of a wire made of ‘A’. Then for the two wires to have the same resistance, the ratio lB/lA of their respective lengths must be
05
Dec
A material ‘B’ has twice the specific resistance of ‘A’. A circular wire made of ‘B’ has twice the diameter of a wire made of ‘A’. Then for the two wires to have the same resistance, the ratio lB/lA of their respective lengths must be A material 'B' has twice the specific resistance of 'A'. [...]