Find the current through resistor R

When an ideal voltmeter is connected between the [points E and F the reading of the meter is V_(0) . When an ideal ammeter is connected between E and F, reading is I_(0) find the current I through resistor R connected between E and F.

The switch shown in figure is suddenly closed. Find the current through the resistor when energy dissipated in the resistor is one third of total energy dissipated in the resistor.

If the current through a resistor in a circuit increases by 3%, the power dissipated by the resistor

In the circuit shown in figure, the current through each resistor is I. Find the currents through the resistors immediately after the switch ‘S’ is opened. How much heat will get dissipated in the circuit after thw switch is opened ?

Determine the current through the resistor for following circuits

Determine the current through the resistor for following circuits