Current Electri...

The amperage of the fuse wire used in a circuit that works on $$230 \ V$$ is $$2.2 \ A$$. If so. the power of the device is

Answer the question:
Two $$5.0\Omega$$ resistors are connected as shown in the diagram.
What is the total resistance of the combination ?

If $$500\Omega$$ of resistance is made by adding five $$100\Omega$$ resistance of tolerance $$4\%$$, then the tolerance of the combination is .

In the arrangement shown in figure when the switch $${S}_{2}$$is open, the galvanometer shows no deflection for  $${l}= {L/2}$$. When the switch $${S}_{2}$$ is closed, the galvanometer shows no deflection for $${l}={5L/12}$$ . The internal resistance $$(r)$$ of $$6V$$ cell, and the emf $${E}$$ of the other battery are respectively:

If the temperature is increase, what will be the effect on the resistance of a conductor?

Two non ideal batteries are connected in parallel. Consider the following statements:
1. The equivalent emf is smaller than either of the two emfs.
2. The equivalent internal resistance is smaller than either of the two internal resistances.

The potentiometer wire AB is 100 cm long. The value of R for which the galvanometer shown no deflection, when AC = 40cm shown in figure is

The current in a metallic conductor is plotted against voltage at two
different temperatures $$T_{1}$$ and $$T_{2}$$. Which is correct

The figure shows a 2.0 V potentiometer used for the determination of internal resistance of a 1.5 V cell. The balance point of the cell in open circuit is 76.3 cm. When a resistor of 9.5$$\Omega$$ is used in the external circuit of the cell, the balance point shifts to 64.8 cm length of the potentiometer. The internal resistance of the cell is

In the network shown, each resistance is equal to R. The equivalent
resistance between diagonally opposite corners is: