Four metal rods are placed, in turn, inside a coil of copper wire, The table below gives the results of the experiment. Which rod would be the most suitable to use for the case of a coil in a circuit breaker?

Question

Philoid · Accepted Answer

The core of solenoid must be of some soft type magnetic material which can be strongly magnetized but does not retain induced magnetism.

Four metal rods are placed, in turn, inside a coil of copper wire,The table below gives the results of the experiment. Which rod would be the most suitable to use for the case of a coil in a circuit breaker?

Four metal rods are placed, in turn, inside a coil of copper wire,

The table below gives the results of the experiment. Which rod would be the most suitable to use for the case of a coil in a circuit breaker?