Advertisements
Advertisements
Question
The magnetic effect of current was discovered by:
(a) Maxwell
(b) Fleming
(c) Oersted
(d) Faraday
Solution
Oersted
Oersted first discovered that current-carrying wire produces magnetic field around it.
APPEARS IN
RELATED QUESTIONS
Fill in the following blank with suitable words:
The magnetic effect of a coil can be increased by increasing the number of ........... increasing the ........... or inserting an ........... core.
What device reverses the current?
Which way does the wire in the diagram below tend to move?
A coil is connected to a galvanometer. When the N-pole of magnet is pushed into the coil, the galvanometer deflected to the right. What deflection, if any, is observed when:
the N-pole is removed?
A coil is connected to a galvanometer. When the N-pole of magnet is pushed into the coil, the galvanometer deflected to the right. What deflection, if any, is observed when:
the magnet is a rest in the coil?
Write the correct option by observing the figures.
What is the function of a split ring in an electric motor?
If the key in the given arrangement is taken out (the circuit is made open) and magnetic field lines are drawn over the horizontal plane ABCD, the lines are ____________.
How does the magnetic effect of electric current help in the working of an electric bell? Explain with the help of a diagram.
Edison used a ______ wire coil is a vacuum glass and discovered the first electric bulb in 1879.