Question

Mira wants to check if a steel butter knife conducts electric current w
ducts electric current. Which of the
following is the correct experimental set-up to check the conductivity of steel butter
knife?
[A] Connect the butter knife in a circuit
and touch it to see if it gives shock.
ici Connect the butter knife in a socket
and touch it to see if it gives shock
[B]/ Connect the butter knife in a socket
and switch ON to see if the bulb
glows.
[D] Connect the butter knife in a circuit
and see if the bulb in the circuit
glows​

Answer 1

Answer:

D) Connect the butter knife in a circuit and see if the bulb in the circuit glows

Answer 2

Connect the butter knife in a socket  and switch ON to see if the bulb  glows.

Option (C) is correct.

Explanation:

• Connect the butter knife in a socket  and switch ON to see if the bulb  glows.
• The reason is that when a butter knife is connected to a socket and switch on then the electron start to flow in the circuit.
• The movement of electron is from negative to positive terminal so when the when the current reaches in the bulb it will start to glow and in this way Mira can get to know about the conductance of electricity in the knife.