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series
They can, but not required.
To carry elections
Advantages in electric circuits : Advantages of using the rheostat in electric circuits is optional as you could just use the dial on the power-supply to vary the voltage (p.d.), and therefore the current. The advantage of using the rheostat is that you can control it to give you nice even numbers for the voltage.
Excessive current can be in the connection of many devices into a single socket.this may cause overload in the circuit
series
gas cylinders , geysers , electric circuits are some domestic material which are flammable.
Practically all electrical devices include integrated circuits today. Anything from a domestic electric kettle to a space station will include them
Colin D. Simpson has written: 'Principles of DC/AC circuits' -- subject(s): Electronic circuits 'Introduction to Electric Circuits and Machines' -- subject(s): Electric circuit analysis, Electric circuits, Electric machinery 'Industrial electronics' -- subject(s): Industrial electronics
J. Richard Johnson has written: 'Electric circuits' -- subject(s): Electric circuits
Edward Nicholas Pink has written: 'The electric and magnetic circuits' -- subject(s): Electric circuits, Electric currents, Magnetism
fuse?
Sadly no...
Battery
yes
They can, but not required.
It makes the current bigger