Manav made an electric circuit & placed a magnetic compass near it.
(a) On switching on, the needle of the magnetic compass showed a deflection Why?
(b) On switching off, the needle came back to its normal north-south direction. Why?
Answer all the Questions
(a) On switching on, the needle of the magnetic compass showed a deflection Why?
(b) On switching off, the needle came back to its normal north-south direction. Why?
Answer all the Questions
Answers & Comments
Answer:
a)When a magnetic compass is brought close to a current carrying wire there is deflection in the compass due to the formation of magnetic field. ... That is, stronger the electric field, stronger the magnetic field.
b)Due to the magnetic effect of electric current, the needle showed deflection. ... On switching off, the electric circuit does not produce electric current and therefore do not produce magnetic effect. So the needle comes back to its normal position.