Current Electricity

Related Questions

• A uniform wire of $16\,\Omega $ is made into the form of a square. Two opposite corners of the square are connected by a wire of resistance . The effective resistance between the other two opposite corners is

  ---

• Two heater wires of equal length are first connected in series and then in parallel. The ratio of heat produced in the two cases is

  ---

• A 3volt battery with negligible internal resistance is connected in a circuit as shown in the figure. The current I, in the circuit will be

  ---

• The circuit shown here is used to compare the e.m.f. of two cells ${E_1}$ and ${E_2}({E_1} > {E_2})$. The null point is at C when the galvanometer is connected to ${E_1}$. When the galvanometer is connected to ${E_2}$, the null point will be

  ---

• Two heating coils, one of fine wire and the other of thick wire of the same material and of the same length are connected in series and in parallel. Which of the following statement is correct

  ---