Question

A------------------compass can be used to make an electric tester.

Answer 1

Answer:

magnetic compass can be used to make an electric tester

Answer 2

$\huge\sf\bold\red{Answer}$

A magnetic compass can be used to make an electric tester.

Let see the example of this—

Aim- To observe the 'magnetic effects' of electric currents.

Material Required—

• A long straightwire
• switch
• a torch
• bulb
• battery(of nine volts i.e. six cells of 1.5volts)

Observation

Make a simple electrical circuit consisting of Compass needle

long straight wire, switch/pug key, a torch bulb and a battery (of nine volts, i.e. six cells of 1.5 volts) as shown in the diagram. Now, hold a compass needle parallel to and over the wire. Switch on the current (for a short time only). What do we observe? As the Battery Switch current flows through the wire, the needle gets deflected. This shows that the current carrying wire can act like a ‘magnet.

Thanks❤

Hope this will help you!