You are supplied with a galvanometer, resistor and some connecting wires. : Find the expression for the shunt resistance in the circuit.

A galvanometer is connected as shown in the figure:Derive an expression to find the value of resistance S.

The resistance of a wire can be expressed in the unit.

A cell and two resistors R_1 and R_2 are provided to you. Derive an expression for the effective resistance of the circuit in which current is the same in both resistors.

Three resistances are connected to a battery as shown in the diagram. Find the value of current in the circuit.

Find the expression for the shunt resistance in a circuit where galvanometer is converted into ammeter

0.5 A current flows through an electric heating device connected to 230 V supply . How much is the power of heating device connecting to the circuit if we ignore the resistance of the circuit wire ?