Magnets are used in _________ .
Mixer and grinder
Televisions
Doorbells
Both (B) and (C)
Explanation for the correct options
D: Both (B) and (c)
B: Television
C: Doorbells
Explanation for the incorrect option
A: Mixer and grinder
Hence, option (D) is correct.
(a) How does an electromagnet differ from a permanent magnet ?
(b) Name two devices in which electromagnets are used and two devices where permanent magnets are used.