Arihant Physics by D.C Pandey

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 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 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 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? 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 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 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: 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 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 equal amount of metals are deposited. [...]