PHYSICS MCQ

Which of the following wires does connect the metal case of the device to the earth?

According to the new international convention, the colour of insulation for live wire is

When an earthed electric appliance gets short circuited, then the current from its metal body flows into the

In case of fluctuations of current or overloading, the weakest point in circuit which melts and breaks the circuit, is

Battery is a collection of cells connected in