True or false
In a circuit resistance is doubled the current to half.

In an a.c. circuit, the current

Two wires X and Y are of equal length and have equal resistance. If the resistivity of X is more than that of Y which wire is thicker and why? For the electric circuit given below calculate Equivalent resistance of the current.

An electric lamp,whose resistance is 20 Omega and a conductor of 4 Omega resistance are connected to a 6V battery as shown in the figure.calculate (a) total resistance of the circuit(b) the current through the circuit (c) the p.d.across the electric lamp and conductor.

Fill ups If current passes through a resistor is doubled, the rate of consumption of energy by the resistor becomes ……………times, provided the resistance remains unchanged?

A circuit containing a 80 mH inductor and a 60 muF capacitor in series is connected to a 230 V, 50 Hz supply. The resistance of the circuit is negligible. Obtain the current amplitude and rms values.

A part of a circuit in steady state along with the currents flowing in the branches,the values of resistances,etc, is shown in figure.Calculate the energy stored in the capacitor.

Suppose there is a circuit consisting of only resistances and batteries. Suppose one is to double (or increase it to n times) all voltages and resistiances. Show that currents are unaltered.

A choke is preferred to a resistance for limiting the current in ac. Circuit, because