Explain the advantages and disadvanatges of semiconducting devices as compared to vaccum tube devices.

State two disadvantages of semiconductors devices.

Explain the following A transistor is a temperature - senstive device.

Explain the following:Why are the conductors of electric heating devices,such as bread toasters and electric irons, made of an alloy rather than pure metal?

Cell is a device used to convert-

What are the advantages of connecting electric devices in parallel with the battery instead of connecting the in series?