Explanation

 Both Hay’s bridge and Maxwell’s inductance capacitance bridges are used to measure the inductance.

Hay’s bridge is used for the measurement of inductance of high Q coils

whereas Maxwell’s inductance capacitance bridge is used for the measurement of inductance of low Q coils.

Explanation

The condenser is a heat exchanger used to transfer heat from the refrigerator.

It releases the absorbed heat from the refrigerant to the surrounding environment.

Explanation

The best instrument for measuring the EMF of a cell is a potentiometer.

It provides a precise measurement by comparing the cell’s EMF with a known reference voltage without drawing current from the cell.