Explain the construction and magnetic tester
Answers
Answer:
Devices which directly utilize electrical energy to provide desired or expected output or a result is known as Electrical devices. During the process of utilization of electrical energy, i,e, the negatively charged particles which are electrons not only flow from one end to another end in a current-carrying conductor but also changes its state from one form to another like heat to gain expected results. There are many electrical components and devices like a transformer, circuit breaker, transistors, resistors, electric motor, and refrigerators, gas fireplace, electric water heater tank, etc.
Answer:
To make a tester of magnetic compass needle, take a matchbox. wrap an electrical wire a few times around the matchbox.
place a small compass needle inside it. now connect one free end of the wire to a terminal of two cell battery. from the other terminal of battery connect another wire. now tester with two free ends of wire is ready.
Principle of working:
when current flows in a wire, a compass needle gets deflected.in other words current carrying wire produces magnetic field around it.
