If a live conductor of a public electricity supply touches an earthed metal casing, then:

In a parallel combination of three resistors, which statement correctly describes the total current in the circuit?

Which of the following statements is correct regarding Ohm's law for an ohmic conductor?

Which of the following statements is true regarding Ohm's law?

What is the primary function of a plug key (or switch) in an electrical circuit?

If the resistance in a DC circuit is doubled and the applied voltage remains constant, then what happens to the current?

What does an electrical fuse protect a circuit against?

In a metallic conductor carrying a steady current, how is the electric current mathematically defined through a cross-section of the wire?

Two metallic wires P and Q have resistances of 3 ohm and 6 ohm respectively. They are connected separately across the same potential difference. How do the currents in P and Q compare?