Question

When the free ends of a tester are dipped into a solution, the magnetic needle shows deflection due to:

A
electrical effect
B
mechanical effect
C
magnetic effect
D
lighting effect

Solution

The correct option is D magnetic effectWhen the free ends of a tester are dipped into a solution, the circuit gets complete and current starts to flow in wires.The magnetic needle shows deflection due to magnetic effect of current which states that an electric current is always associated with magnetic field around it.Due to this magnetism the needle is deflected.Physics

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